First of all, thank you for the idea. Now I can plunder guilt-free. ;P
Second of all, is there a mmorpg without any alts?
It's true, using alts could help you farm certain things in the game (Arena pre-2.0 comes to mind). But I don't see why receiving acount from people who quit playing is so bad though. I mean, they quit; and so long as you aren't scamming the system or others players with it, then it shouldnt be a problem, right?
i don't mind the alts on my server. Arena and Matsuri are cross-servered now. Alts in Sage are pretty fun; because free wins, plus they guarantee Sage in quiter server. Veteran group leaders know how to identify spies, plus there's the Whte List, so alts's advantage for GNW is pretty moot. As for plundering alts, that only applies for dead servers; in normal server that alts would be torn to shreds convoying even before you could hit "refresh". :).
So, all in all, it's fine.