Nothing against the regular controller but I use my Dreamcast exclusively with the arcade stick and its really too bad Rainbow Cotton does not support the Stick and seems like it be playable with it. Also this may seem odd at first but MLB2k1 which unlike the other years is made by WOW and very similar to their Naomi game World Series Baseball that uses a arcade set up

I've tried using cheatengine with flycast and doing scans after controller input but cant not seem to narrow it down to location where the values are, or how involved it would be.
Also was thinking of using Ghidra since be such a easy change to the Maple section but guess be hard to have the right Katana environment to recompile it.