...You can't penalize someone for not playing. If your team is stuck in the spawn, it's because the enemy is overpowering and your team knows they're just going to die if they try. This is kind of a fundamental flaw with WvW, where you can tier-up an enemy's Keep, give it Tactic upgrades, and stack it with so much siege that it's impossible for them to get it back until people get bored and leave. If Anet can't change the mechanics, then the farming behavior is what needs to be penalized, not the ones being farmed. Maguuma is really the only server that abuses this style of play.