I'm working on a Resource Pack dedicated to the server, and I certainly don't mind making a couple other Wolf skins, but we'd have to settle on a single skin and sound set to use, since Minecraft only has one set of wild/angry/tame skins and sounds in the first place. It'd be kind of weird to have what looks like a Mightyena making Growlithe and Manectric sounds, too. Settling on a single skin/sound combo also helps the server's plugins accurately refer to the Wolf mob in general.
That said, the Resource Pack is still very much a work in progress, and there's plenty of room for change. Got any preferences as far as wolf-like Pokémon go?
(If you've any further suggestions regarding which mobs should be which Pokémon, please do post in the
Resource Pack Thread!)