If ppl would be kind enough to play both na/euro servers and do totals, that would make sense, but that concept has been rejected in the past from all the people that are in love with their ping.
As for playing style, to each their own.
Hmm so why there is not one single UTA approved server running? You're not even trying.
http://forums.utassault.net/showthread.php?t=23333
Besides what wish said. I personally don't see anything against having one NA server and ppl playing there if they wish.