As a TMNT cartoon obsessed kid in the 80s/90s, I know what I’d want in the game:
-Original cartoon stories/clips/voices
-Custom callouts from original cast. They’re all still alive except for James Avery (Shredder). If they can only afford a few - hire Barry Gordon since he does Donatello & Bebop, and Cam Clarke since he’s Leonardo & Rocksteady...but really, having them all would be amazing.
-Original theme & show music or reasonable recreations. The recent Arcade1Up has a cover of the theme song instead of the real one...so we know the tunes are still possible.
What kind of toys would be cool? Something involving the Technodrome, Krang’s robot body, Mousers, or the Transport Drill would be cool. Incorporating the dimensional portal to Dimension X would be great. Shoot the portal for Dimension X modes or something. Fighting Shredder & Krang’s tech seems like a good way to feel like you’re the Turtles vs. the bad guys.
Srsly if any Stern peeps would like a consultant for this project, hit me up. I’ll sign an NDA & help for free...I know everything about 80’s TMNT episodes & have connections with many people who were involved with it. Cowabunga!!!