I think making the skins is a missed opportunity to make a version 2 of a character with slightly altered abilities. In the vein of Warmachine/Hordes where the next iteration of "Named" characters had new abilities on top of a new sculpt. Example: Thermoply Maximus gain some DPS and loose some tankiness. As the model has less armor and gains a spear.
Too late. There are many skins already with no change on stats. You get that slightly changes by selecting your cards or using supports. They surely prefer to spend testing time on new characters more than on slightly little changes.
Problem with that is you're making people pay extra for a profile that might be better. Paying 30 bucks for a Fullmetal Kozmo is not cheap, but it's a collectionist item and not something that affects the game. Now, if that version was a changed Kozmo I would be paying the same for 1 character that I am for a full 4 character expansion
And most important of all: Aristeia! is a game with plastic miniatures. We offer metal versions as we know many of you like them, but they're only versions, skins with a different design, and pinup. We don't want to force anyone to buy metal for new profiles, even if they only were slight variations from original ones.
And it's more likely a MOBA-based game, in which "skins" are just for the eye, not a p2w way of playing the game. In general skins only change your style, not the way you play or the hero/char w/e is going to be played.
I am with @-V- and @dakara here. We have a very well-balanced game at the moment which maybe needs just some little tweaks to be "perfect". With more profiles you create an internal imbalance between profiles and maybe an external concerning the whole game as well. At the same moment this would mean a new pay2win approach like in X-Wing or WHU. But I like and love the current approach.