I'd really love for a sprite hack for both Power Blade 1 (US) and Power Blade 2 that keeps the enhancements from the localization while implementing the player character/enemy/cutscene sprites for the Megaman-like anime protagonist from Power Blazer (which is too much of an unplayable mess to justify puting up with that for the art design alone).
And re-implementing the Japanese graphics in the vastly superior version of Decap Attack.
Or cleansing the Treasure-made Mc Donald game from its filthy license.
I know, I'm weird
Your hack is really interesting in concept - As close as possible to a decent Captain America licensed game, maybe?
Loved the previous featured Batman-themed hack too.