Ugh. I find myself rather ashamed to have started these controversies.
The point of PBZP was to honor BZP members, but have a little more order about it. Yes, it is usually customary and polite to ask the advice of the member who is being MOC'd. And I can't say I like most of Tigs' MOCs in his PBZP.
But beyond the basic 26 member idea, I was completely unaware of any real requirements. It's however you want to interpret the member. If your idea is a Neo-Matoran, that's fine. Usually I like to make something more personal and intricate as a representation. If another member doesn't do the same thing, it's their choice.
And as far as members meaning something to the MOCist... At some point, you're gonna run out of friends with the letters of the alphabet. I know very few X's on BZPower; Xemnix and xccj are the two that only two that immediately come to mind.
There are more arguments in here too, but I don't wanna get into all the ins and outs of BZP popularity. I'm sick of hearing preaching on that subject. >.<
~Shan