Re: Kids toys and support troops, it worked for the G.I.Joe line for decades. The line of smaller figures has run from 82 (ballparking, may have been 81 or 83) to present. There were roughly 3 years where they did not make any G.I.Joe figures. In that run, for Cobra at least (I always preferred their soldiers because I like big armies, not an army of specialists), they produced tons of support troops and non frontline troops. They had a variety of pilots, naval operators, naval troops, robots, ninjas, telecommunication officers, soldiers to repair their assorted exotic technologies, soldiers for every environment, doctors, scientists (well, a scientist who preferred to go shirtless and wear a monicle), guards, etc. They had it all and they were a kids line. It was one of the strengths of the line that by the late 80s you could have figures to fill most of the major roles an army has.
As for LEGO Star Wars, some of these soldiers exist in the movies. The Empire has Death Star Gunners, technicians, etc that could be made. The rebels were a little more bare bones but they had support personel as well. The Republic has the guys flying the firefighter ships in RotS for example. The CIS surely has support machines as well. These would sell, if used right. While I would love an Imperial Support troops pack with 2 technicians (and scanner), a Death Star Gunner, and maybe a black uniformed officer (or another Death Star Gunner or a black 3PO style droid). I would buy 10+ of those over time. But, it might be more realistic if they were limited and either sold just on S@H or as an exclusive somewhere. My point is though, these figures would sell if they were put into the right product. Maybe that product would be better if it were a larger battle pack or a chunk of the Death Star.
As for what else I would want to see in 2010 (some realistic, some there is no way):
Battle packs(I'll assume each of these has some small vehicle or something):
Endor, Imperial-2 Scout Troopers, 1 Stormtrooper, 1 Naval Trooper
Endor, Rebel-3 commandos, 1 commando commander or 1 Ewok
Imperial Drivers-1 At-At driver, 1 At-St driver, 2 TIE pilots, possibly something else instead of the second TIE pilot
Rebel Pilots- Some assortment of X, Y, A, and B wing pilots. Possibly one of each.
CIS 1-3 Geonosians, 1 Super Battle Droid, 2 Regular Battle Droids (sand colored)
CIS 2-2 Destroyer Droids, 3 Super Battle Droids with weapon arms, 1 Regular Battle Droid (possibly an officer or pilot)
Clones, EPIII style-2 501st clones, 1 clone scout, 1 green highlight clone (not sure what the unit is)
Clones, CW style-2 space troopers, 1 aquatic trooper, 1 heavy gunner with gatling gun
Fringe-2 Weequay pirates, 1 Quarren (obviously needs a new head mold), 1 Rodian
Droids-2 3PO style droids (1 Black, 1 Red), 2 R2 style droids in colors we haven't seen yet, a few droids like from the Sandcrawler
KotoR, Sith-3 Sith Troopers, 1 Commander or one generic Sith
KotoR, Old Republic, 3 Reuplbic Troopers, 1 Commander or 1 random Jedi
TIE Advanced (not Vaders, the one actually caller the TIE Advanced that looks kind of like an Interceptor)
Remakes of TIE Interceptor and Bomber (the main is honestly because I don't have these two)
Imperial Missile Boat (I was a big fan of the TIE Fighter and XWing games and I would like to see some of the ships made)
New Jabba's Palace centered sets (the audience chamber, the skiffs, the sarlacc pit, etc).
Droid Factory-Like the one on Geonosis, lots of droid parts and completed droids, assembly line set ups. If it doesn't include the necesary parts, possibly it could have instructions to incorporate motorized parts to make it all work.
A new Imperial Shuttle closer to scale (or at least large enough to actually have the front ramp under the chin)-the figures could be Imperial or the Rebels who went to Endor.
Mustafar command bunker-the war room and conference room mainly, it should include Anakin, Nute Gunray, Rune Haako, Wat Tambor, Poggle the Lesser, Niemodian Soldiers, Battle Droids, R2-D2, maybe mouse droids. Destroyer droids if you want to include the deleted/unfilmed stuff. If they want to include more, it could also include 3PO, Padme, and Obi Wan and part of the landing pad for their lightsaber battle. If they want to go all out, they could include Palpatine, a few Shock Troopers, a burnt-to-a-crisp Anakin, and a lava side part for that battle. Or this could be broken up into three sets that all combine.
Starforge- the final area from KotoR, it would include Darth Malak, Light and Dark versions of Revan, Bastilla (dark side), a couple of Sith Troopers, 1 Sith War Droid, 2 random Jedi to fill the tubes powering the place, 1 random Sith apprentice wannabe. This would mainly just be the roundish chamber with a couple of tubes for the Jedi and area for Revan and Malak to fight it out.
Ebon Hawk-In short, I would try to put figures for every character ever seen on this ship in this set in case there are no other KotoR sets. If there are, we could probably keep it at Revan, Jolee, HK-47, T3, and Bastilla. If they KotoR II occupents, I would go with the Exile, Kreia, Boa-Dur, Visas, and HK-47.
Basilisk War Droid-Canderous and 1 or 2 Mandalorian commandos.
Clone Wars-Some kind of Republic base, clones would be the obvious figures, maybe a uniformed officer or two.
Jedi Temple Assault-possibly need to break down into multiple sets. The main open area, with a few 501st clones, Anakin, 1 or 2 random Jedi. The Entrance, a few 501st clones, Obi Wan, and Yoda. Outer landing pad, a few 501st clones, Bail Organa and his speeder, that young Jedi (it was Lucas' son, but I can't think of his name).
A new Cantina-larger than the first, it would need Wuher (the bartender), Han, Chewie, Luke, Obi Wan, Ponda Baba, Dr Evazan, some Bith musicians, Greedo, a sandtrooper or two, a Jawa or two, and one or two other random aliens like the Talz.
Tattoine Deluxe battle packs-a Ronto with 3 or 4 Jawas and a droid of some type (maybe a gonk droid)
-A dewback, crashed escape pod, 3 or 4 Sandtroopers.
Hoth Cave-Luke, Han, a Wampa, 2 Taun-Tauns, maybe throw in Chewie and the probe droid to cover more Hoth scenes
Figures I would like to see, but not sure what sets would be best to see them in (maybe magnets?)
Groups that should be together-1, Kir Kanos, Carnor Jax, blackhole stormtroopers
2, Darth Sion, Darth Nihilus, Visas, sith troopers
3, Prince Xixor, Guri (maybe in his ship)
4, Lord Shadowspawn, Kar Vastor, Pilot Luke, blackhole stormtroopers
KotoR-Darth Treya, HK-50 droids, Mandalorians
Other EU-Grand Admiral Thrawn (and any other Chiss for that matter, like Sevrace Tann), the Vong, Lumiya, the Noghri, Darth Bane, Darth Krayt (and several of his Sith), Cade Skywalker, Vergere
Movies-More aliens, more fringe types like the pirates and bounty hunters.
Actual magnet set ideas
1-Lando, Lobot, Bespin Security Guard
2-Gammorean Guard (presumably with more detailed paint like the new Ewoks), Bib Fortuna, Lando in disguise
3-At-At Driver, Snowtrooper, Rebel Snowtrooper (or possibly a commander)
4-Shadowguard, Blackhole Trooper, the Apprentice
5-Jango Fett, Geonosian, Younger Boba Fett
6-Asajj Ventress, Nute Gunray, Senate Commando
7-Jawa, Tusken Raider, Weequay Pirate
8-(won't ever happen) Admiral Ackbar, Mon Mothma, General Madine
Peace is a lie, there is only passion. Through passion, I gain strength. Through strength, I gain power. Through power, I gain victory. Through victory, my chains are broken. The Force shall free me.
-The Sith CodeBricklink Store