That is bad...I agree though, those types of things should be customization rather than separate costume slots...On that same note, I hope DOA considers going full-on customization in DOA 6...It is a far better option, rather than the approach they are taking with the costume packs....Where the outfits you get can be hit or miss...
Why disallow people from creating their own designs? If it's the fact that they want to capitalize off this costume pack system, then they can still release costume item packs for building new outfits and still make money off of those in a customization system.
I suppose I'm a little spoiled with customization, as I come from VF, where we have a full-on customization system...Full of possibilities for people to express their creative abilities, or recreate anime/manga, game, movie characters, famous personas, etc..
Here's a look at what I mean:
Intro to the system using Sarah:
Some Akira stuff:
A look at all the awesome wrestling legends and whatnot that can be created with Wolf!:
Art of Fighting, Power Rangers Time Force, Vocaloid References:
They should just X-Copy it from VF...Take out the point limitation, and the character-specific items though...Make them either Male or Female-based.