Always fun to read the comments of PvP-haters, specially when they dont even read what is being discussed
First of all, VP (Victory Points) was intended to mainly be available via PvP, with other (but slower) methods of gaining them. The game is in many ways built around omni/clan conflict, and PvP has - at least during my short 5-year playing - always been important part of it. Having one set of items available mainly through PvP isn't really that much to cry about. Specially since most of the parts are inferior to Ai armor.
Secondly, and at least for me the bigger thing: Allowing buying VPs and furthermore yesdrop items will mean buying credits for cash. Noone knows the conversion rate yet, let alone all the effects. But credits for cash should already say enough when at same time FC is so trying to assure they wont sell power for money. And dont forget that ebayers/"pearl farmers" can always undercut FC's conversion rate for VPs, bringing those problems back as well.