Just how many bases do you whiners think it is physically possible to "roll" in ten minutes? You can't even get a goon more than a sector or so in 10 minutes and still have time to drop troops.
What we're talking about isn't "Ooh, look, arena locked, let's all romp around the map taking undefended bases on after another!" It's more like "we've been fighting for this base for the last 20 minutes, one more push and - oh, look arena locked, better take it now or never." If the defenders all give up and go away, that's hardly our fault.
But I guess according to the whiners here, if you're attacking a base and the defenders decide to stop trying to defend, you're obliged to stop attacking, turn around and go home in the name of "fairness". Failure to do so is "avoiding combat". Yeah, let's hear that once more so we can see how much sense it makes: if we fly into a fight and the defenders all leave (as in Waystin's example), we're "avoiding combat".
Of course, if we all left the arena that's closing, went to the one that was opening, and upped and took a base, all you'd hear here would be "WAAAAAHHH! Stupid vTARDS upped in a new arena and stole our base while we weren't ready! WAAAAAAAHAAAAHAAAHAAHAAAAAAA!!!"
I guess the jealous, petty, and hateful will always have something to be jealous, petty, and hateful about.