I'd be happy to let you edit the stuff I make; it's made from Blizzard's original stuff, anyway.
I also have a copy of the Pegasus from before it had any fire or glowing eyes, which is just the riderless chaos orc warlord model with hippogryph wings and fly animations, if you want that at all.
The model you described that you had been working on sounds neat, but I don't see a link for it here. Did you forget to attach it? Anyway, it sounds great.
I'm able to combine it all into 1 texture instead of 4 like you said, but I have a lot of Simple Model Workshop requests that have been waiting for about a month and I still need to address them, so I may do that first.