I don't know how hard it is to tinker with xp system, but seriously this would be fucking great to at least try something out. I mean we have this shit since the January patch 2011? And around 2012 chadz said it is shit and they gonna change it. Even if it (certainly) will lead to other problems I would love to try out something new (or old).
Regarding flags there is certainly a lot of nostalgia involved, but I often think about how much fun it was to watch or be part in the end game of battle. There were so much more possibilities to win the round, now even if the last manages to kill 7 out of 10 enemies there are still 3 sitting by the flag and thus winning the round. Certainly that also meant having fucking assholes delaying and other shit admins had to deal with, but personally I think it is the lesser evil compared to current situation.