Are 3DS models unable to be obtained? I found their Dream Drop Distance models rather nice. Shiki is in there, too. If you saw the extended trailer (or probably gameplay videos now that it's out in Japan) then Shiki is there as well. All the main protagonists are there. Just missing the Reapers for the most part.
Tough one. Had to debate between Kingdom Hearts and TWEWY, but I voted Kingdom Hearts still. I would like to see more Organization love, such as Xigbar, Saix, etc. Wouldn't TWEWY technically go under it now because of Dream Drop Distance? At least the main crew.
I think it's funny how even though you're Mewtwo2000, you seem to use Jiggs all the time for stage previews. Looks nice, and a tad bit larger for Brawl. Other ones were really small or had really close death boundaries.
I'm honestly not the one to request CSPs from as they suck but I can. I don't exactly know who his "buddies" are. If you can list their names I can give it a whirl.
Only off thing (not sure if mentioned) is sometimes when Iron Man dodges, he'll be invisible (ground dodge, left and right) but re-appears once the dodge is over. Very very minor, but just letting you know. Very awesome overall. He needed a real import instead of the old texture.