Probably wrong thread, but I can't find a suggestion box for anything other than website/companion app.

What about a mount with interchangeable parts? to include, but not limited to:

Color
Color on specific parts
Part swapping (i.e. different seats, wheels, wings)
Mount upgrades (i.e wings for flying, parts for swimming, extra seat for 2 person mount)

Mount could come from quest or crafting or possibly purchase. purchase just hinders growth of exchangeable parts.