So I love to goof off with transformations. Not in games or even in rp but just for fun, I've always liked it. Some may notice I have in some threads suggested Morpher as a job, but not to run stuff in, just because I love skin-walking. I would spend a good hour or so in WoW as a druid just shape shifting and using the various forms just for the fun of it.
Now that all said I would like to point out transformations are nothing new in this game. A few Saint's Wakes back we morphed into Pico Demons, bats and ghosts. In PotD we all become frogs from time to time. So with that I would like to see these options opened up to the game at large.
What I am requesting is either some special reusable items (like the spouse ring that teleports you) or an emote set up or something to allow us to change. Of course it would need to be limited, similar to a NIN's invisibility. Canceled by zoning, combat, using anything but Sprint really, and of course enemies can see right through it. You could even use the ASW2014 or Ninja Vanish animation (puff of smoke).
Some Examples
Bat
Spirit
Black Cat (like the minion)
Pico Demon
Frog (maybe a few of different colors like in PotD)
Skeleton (like the overworld enemies, different depending on race maybe?)
They don't all have to be "spooky" either, there are a ton of fun minions and little monster enemies like Onion Kids that would be great.