An iconic ship from the classic movies and the set looks great; it can go on my (ever-increasing) list of "SW Lego sets I'd like but can't afford - and which will inevitably be sold-out or retired before I have the money..."
I agree that the ramp would have been a nice touch (even if it had just been a drop-down ramp that didn't actually lead to a hollow interior) but, looking at the design of the thing, I can see why that might have led to many problems with the integrity of the structure. A shame but hardly a deal breaker.
Actually, from my point of view, I quite like the fact that the official Lego designs can't always include all of the the features we might otherwise want and that, sometimes, deliberate omissions that have to be made in the production stage. It's those sort of design choices which ultimately make Lego so great for me: with any other toy the design "is what it is" and you're stuck with it - but with Lego if you don't like it or you want extra detail you just get out a whole bunch of parts, play with the design and MOC it until you get what you want!
I've happily modded all sorts of things on big models - like the cockpits and interiors of the 4504 MF and the 4483 AT-AT - until I've got them just how I want them. It's *at least* as much fun as building the original sets...!