But roster size is related to guild purpose and how WvW functions. GvGs are small, so you keep a small roster. When winning doesn't matter, you prioritize other things such as GvG. But under this new system, at least when it begins, people will care about winning. And what do you do when winning matters? You run as many people as you can on one pin. First few months after release I was on Darkhaven, no where near a top tier server. And we still had 5+ guilds fielding rosters of 60+ members a night. As GvG has faded we have already started to see the return of mega-guilds that field 50 or more a night. SF, and TSYM for example. When this new system goes in, we're going to see more guilds break from the traditional 20-30 man roster, and get real large real quick.