Well this is an idea I got mainly from looking at Dota2’s Immortal stuff
That maybe we could get costumes with special particle effects?
And no I don’t mean pay to win stuff that gives stats and damage boost.
I mean for example: a special costume for pyromancer that changes the fire color to blue or black.
and since its going to be released in steam how about a collaboration with Steam and make a Lina (Dota 2) Costume that’s for Pyromancer and Crystal Maiden (Dota 2) for Cryomancer? , I mean even Final Fantasy Type-0 had a chocobo courier for Dota 2 to those that pre-purchased it. I say this is a good publicity for the game too. (I guess this would make it a STEAM Exclusive I guess, maybe a Founder’s pack?)
To conclude: I suggest putting up costumes that had extra work done into them (of course I expect them to be pricier) The costumes would have added effects to reference its name or its origin.
What do you guys think?

They make you look too cool for the game.
No one will know how you killed your enemy because everything is in the way MUAHAHAHA


Though I doubt they will implement it. 