I want the GBA walking animation patched into RE4R ASAP, that's a game changer right there.
Comparing this miracle port of RE2 on GBA to the king of miracle ports in the N64 port is a nice touch. They're progressively lowering the spec to bridge to gap to the Game.com version.
I'm surprised I haven't heard about a full featured Saturn port yet. Someone could even add in a Tick equivalent model swap, maybe for the lab Lickers.