Yeah, but note that RW is a developer and we can't really make textures, new models and implementing them in the game. ;)
We can suggest them (like we did with Cookie mounts for Xmas!) "look can you make this mount like on this image? or like this and this", but then it is up to them to decide if your/players'/CoMa's/P-Team's crazy mounts can be actually implemented in the game - maybe it would be too crazy? maybe textures would be too hard to make or look bad later in-game? I am not a programmer, but maybe our crazy fantasies for mounts/new staff would be too crazy xD
How about flying mounts that actually fly instead of hover?
Would game engine even support "actual flying"? Coz I assume you would be preferably allowed to fly up in the sky and then that about textures/mountains/edges of the maps. To enable flying you need to check again whole map so players won't fall somewhere behind map or smtg XD