Well the point I was trying to make was that there are many class items that look great/awesome but you are forced to wear a crappy grey and black one so you can have a chance at getting faction items instead of wearing the good looking ones.

Well like all the other RNG in this game, you would have to get drop that is lucky enough to carry the same faction that you want to use. It would open up the possibility gain faction rep and not be locked into the two items per faction. The boosts would give incentive to continue to grind for different vanity gear.