That stage is called "Final Frustration".

Here's the 2GB SD card version.

http://www.mediafire.com/file/f9zddcvo85anb8b/Sonic_Pokemon_Z_for_2GB_SD.zip

SSE doesn't function and there's no custom music.

I'm working on cutting down the roster and playtesting it still.

Anywhere from 1 week to 1 year depending on what's done. Calikingz01 makes very high quality PSAs but usually only about once a year. I made a crappy Sonic PSA in about a week.

Basically a way to make the psychics like sm4sh.
Like launch distance, gravity, and stuff.

I'm sorry if this comes down as condescending, but I'm sure you mean "Physics" not "Psychics". Physics is the physical properties and phenomena of something. Where as Psychic is relating to or denoting faculties or phenomena that are apparently inexplicable by natural laws, especially involving telepathy or clairvoyance.

Brawl Minus or Smash 2 would probably do it.

I'll look into that and see what I can do.

Could you try an earlier version with a 2GB SD card, perhaps the Wii U itself is the issue.

Delete config.dat in the SD root and make sure that Gecko OS is configured to Axnextframe when you launch it.

I really doubt that, but I'll rebuild it anyway.

You'll find the editor for it here: http://forums.kc-mm.com/index.php?topic=65113.0

BrawlEx won't work without that file.

The file responsible for the extra characters is CSSRoster.dat in root/private/wii/app/RSBE/pf/BrawlEx/

I just finished recreated the sc_selcharacter. Let me know the results.

OK, I'll try recreating the sc_selcharacter from scratch and we'll see the results.