Granted a spam bot resurrected this thread, but I'll actually chime in on the actual subject matter since it's nearly 3 years later and an interesting discussion after all this time.
Ya know, I'm with Kitana Fan on this. Whilst at the start it was a bit of a chore (especially in the REAL early days when stuff was much harder to get, well, except for the head glitch which I did take advantage of), I have thoroughly enjoyed having so much stuff to unlock in this game to customise my characters. In fact I'm still enjoying having gear left to unlock even after all this time. Admittedly there's very little in the way of "gotta have it" gear anymore, it's mostly just the dregs and palette swaps left in the KL at this stage, but there's still a few little beauties that come along in the KL gear pool that completed a skin better for me than what was available before, with a few things I'm still endeavouring to unlock.
I genuinely hope an MK12 doesn't return to the days of singular outfit options, I've loved making the characters my own and having a reason to still keep playing nearly 3 years later.