I don't think Squenix would approve really. Not all situations is really a "I scratch your back, you scratch mine" type deals.
Free Step Dodge
Xhominid The Demon Within
VAND1TA
With Cloud in Smash, I think Tifa in Doa would be also a great way to promote Final Fantasy VII HD Remake, and Lots of bouncy boobs and DLC outfits.