Most recently, I've been trying to get my custom roster together and I've found that Link skins can go over Lemmy's slot in the roster. This works for me because I have a mod for just about all of the Koopalings, and this more-or-less rounds that out.
The issue is that Lemmy's karts are smaller than Link's, and as a result, the swapped driver (in this case, Dark Link) is now driving karts/bikes/etc. that are not to scale and his hands and feet float near the handlebars. He still animates just fine, but I was wondering if anyone knew of a way to force the larger karts to be used (or, more likely, to edit Lemmy's weight-class so that the right size is used). It's fine if it doesn't result in a wifi-safe option, but I'd like to know that the fix is out there.