Loved the Batman series, but like most, wasn't aware of the sets until it was too late.
I did manage to get the Bat boat, Bat car with two-face, Harlequin & Arkum.
I count myself lucky, as most never saw these sets.
With trades an so forth (not-the-mention) the magnet sets, I managed to pick-up all the characters including Bane!
I think Lego could have done more with this theme, and judging by the sales, it was surprising that it had such a short life span.
Hopefully with the new movie things might be better, and Lego might re-release some of the older sets as well as the characters in the Lego Batman game book by Prima, one's of interest are Commissioner Gordon, Clayface, Hush, Killer moth, The man bat, the Mad hatter & Ra's-Al-Ghul.
You never know, it could happen, cheers Marty