My idea so far
Present:
Captain Marvel
Captain Marvel Jr.
Mary Marvel
Minute Man
Bulletman
Moon Girl
Lightning Lad
Magnet Boy
Future:
Mr. Mind Decended Legion member (no this is a terrible idea, I keep imagining Mary Marvel hooking up with the Fluke man from X-files)
Fatman (later just named Human Saucer)
Golden Earth Marvels
Golden Earth Minute Man
golden Earth Moon Girl
Ghost Rider
Retooled Spy Smasher
Super Green Beret
(Split) Captain Marvel (renamed Mannequin)
Golden Age Spy Smasher
Retooled Mr. Scarlett
Golden Earth Mr Scarlett (and Pinky)
Retooled Bullet Girl
Golden Earth Bulletman?
Golden Earth Bullet Girl?
Funnyman? (Possibly retooled & renamed)
Retooled Phantom Eagle
Golden Earth Captain Midnight & Phantom Eagle
Retooled Golden Arrow
Western Golden Arrow
Retooled Red Gaucho
Western Red Gaucho?
Daughter of Ibis (Isis?)
Ibis the invincible
Golden Earth Marvo?
Golden Earth El Carim?
Retooled Raven
Golden Earth Raven
Retooled Vulcan
Golden Earth Vulcan
Retooled Sword?
Golden Earth Sword
Retooled Nyoka
Golden Earth Nyoka?
Hawk and Dove
Mr A/The Question
Odd Man
Ditko's Static?
Ditko's Missing Man?
Ditko's Killjoy
The Creeper
Ditko's Destructor? (No he's part of Atlas)
Shade the Changing Man
Ditko's Stalker?
Speedball?(maybe)
The cartoon heroes of Filmation until 1982
G.I Joe
Transformers
Milestone comics characters?
Popeye (since 1997)
1:I was actually thinking a slightly redesigned Brainiac-5 with Specs, a radio around his neck and antenna for that one. A result of an elderly, dying Mr Mind mixing his DNA with that of a humanoid in a kind of cloning experiment.
2:If you're going to retool and rename Funnyman, I think ''The Comedian'' might be a good name for him. Or, alternatively, you can keep the name Funnyman and turn him into a literal ''Cartoon come to Life'' with June Farrell as his cartoonist/Love Interest. Sorta like a Silver Age version of The Mask.
3: Ooh, yes. that's what I was thinking too. sort of like a Fawcett version of Zatanna.
4:Eh, I say let it be Mr A. Let Steve have his fun. Although for the love of God, keep that boi on a leash. I mean, I love his work n' all, but I've seen some of his objectivist cartoons he made for his indy work and they are pure cringe. Maybe Jack, Jerry and Joe could take him aside and have a word with him about his philosophical views. Being elder members of the Industry and rather left-leaning, I'm sure they can give him a change of perspective.
5: Actually, I kind of envision what would have been if Wildstorm had merged with Fawcett instead of starting with Image. Basically, you'd have everyone from Gen13 to Tom Strong to Top 10 to Stormwatch to Wetworks to Black Ops to WildCATs to Dv8 and The Maxx in the same universe as Capt Marvel and the rest.(everything minus The Authority, LxG, Astro City & America's Best Comics that'd probably end up elsewhere.) Maybe have Milestone be one of the studios that make up Image instead.
Also, one last name I wanted to mention. Do you in any way see Paul Chadwick bringing Concrete to Fawcett in the 80s?