Me, I’d love to see a full legnth, fully animated, theatrical release of a Superboy and the Legion of Super-Heroes story.
Specifically, I want 'em to do the Mordru story from Adventure #369-370(?), but add a few characters and make it the first meeting of Superboy and the Legion.
In other words: Shadow Lass accidentally opens Mordru’s vault. Mordru breaks loose and begins ripping up the Legion HQ and mind-controlling the other Legionaires. Shady, Valor (“Mon-El” is too hard to explain), Duo Damsel, Chameleon Boy and maybe one other character…Saturn Girl? escape into the past to regroup and plan.
They run into Superboy, introductions happen, but otherwise things continue pretty much as written, except that in addition to the faceless goons who take over Smallville, we also have mind-controlled Legion members.
They could even work in Lana Lang: Insect Queen!
As long as I’m dreaming, I’d like Miyazaki(Totoro, Princess Mononoke, etc) to do the design and animation, and Paul Dini / Ty Templeton to direct and put Paul Levitz in some sort of oversight role.
Sigh…it’ll never happen though.
And, um Legomancer? You do know that Terry Gilliam (Time Bandits, Baron Munchhousen, etc) and Alan Moore (Watchmen) were working on a movie deal back in the mid-to-late '80s? A script was even done (although I believe Gilliam was gone by that point) by Samm (Batman: The Movie) Hamm that I’ve read and it was decent (except for some major problems with the very, very end). I wouldn’t describe any of those folks as “fools”! 
Fenris