Should they start giving scaling buffs depending if you own less than x number of keeps and/or scaling debuffs if you own too many? This would be to counter the map zerg when faction pops are wildly imbalanced, so that the less numerous factions actually stand a chance don't simply leave to do much more exciting writs or mat farms. Obviously it wouldn't do much of anything most of the time when pops are ridiculously lopsided anyway but maybe small scale or solos would maybe try to farm at a rss if the full zerg doesn't show.
While I truly love feeling like a clannfear at an Alik'r dolmen, it tends to not always be the most enjoyable.