I know most are on ultimate but personally I have yet to get over brawl moddig plus I know for a fact it's the only one so far to have High Quality Custom Characters.
As for my Requests I made sure to choose characters that already Have in depth movesets made by other fans, that way you and I would already have a feeling
What the final result would look like.
For example my First Choice is GOOEY FROM THE KIRBY SERIES.
Link to video
https://youtu.be/CGh-X6Wldm0