Speaking of things that need evo's why not some mons that could use pre-evolutions as well? I'll start by posting the list of everything banned in Little Cup
The few that jump out at me are mons that originally never evolved such as Gligar and Sneasel (considered a pair), Scyther, Tangela, and Yanma. Giving all of these pre-evolutions would assist in putting them in Little Cup with a reasonable BST. I would also say Skarmory has long needed one as well since its pair Mantine got one in gen 4, not too late to fix this stuff.
Plus some of them would be incredibly adorable and egg mons have always been interesting in how they can expand the movepool but exclude attacks stuck in the past generation. The lack of expanding existing mons is something that really bugged me about gen 5 so here is hoping they do add some more.