After more hours of playtesting, I was able to make pivots easier without having basic movement affected with the Gamecube Controller. It now has its own "nudge" for consistent pivoting. It's quite similar to Shield Dropping. It takes some practice, though. I can only do it consistently to the left.
But hey, that's good! It means this mechanic can definitely be added. Just needs more testing with other Gamecube Controllers. (Which is difficult to do since I'm on my own and only have 1 Gamecube Controller.) >_<'
EDIT: Bad news. Ice Climbers started having some issues, even with UCF running thru Dolphin. Looks like this idea didn't turn out as well as I had hoped.
EDIT2: Good news. The crash was caused by an unrelated code I had on. There's still a chance of this idea going through.