i vote yes also.
although when i thought about it for a while, the obvious answer popped into my head...
they found a 'more cost effective' way to host the game, but in doing so they couldnt host 600+ in one arena.
cheaper server cost = worse stability for high numbers = switch to split arenas.
if we really think about it, we will see that HTC doesnt care for ever going back on this, not only that but maybe they cannot host a server with such high numbers anymore.
hope its earning some good money for them if this is true, in all honesty i would prefer them to earn more money and spend more time on improving the game than switch back to the old server.
the new system is crappy at times, but if HTC went bust it would be alot worse.
of course, this could just be incorrect speculation, but it makes sense as a reason why they will never give us the old system no matter how much we whine.