The next big change, the scoring system
Maybe at each objective, have a pool build up for each person killed, and that pool is divided evenly among those who are still there when the 3 minutes (or whatever it is) is up and the defense medal is awarded. So if 5 defend a tower against 15, not only would they get the wxp for killing the attackers, they would also get some every the medal is awarded. Same thing for assaulting maybe… when the Lord is killed, or while the assault is ongion, award wxp based on how many people they had to get through at the end or until the waypoint resets.
How about a bonus for being behind on the point tick? Say extra 10% wxp, 10% gold, 10% vit/tough buff? If you are earning less than 50% of the lead point tick, kick that bonus up to 25%. This would stack with any outmanned buff. You could call it the Underdog Buff. This would effectively reward people for coming out and lending a hand when needed to servers getting behind.