-Make it so when you die at a main pvp spot, you spawn in a town people go to. For instance, Zumbul, you were talking about making only 4 castles siegable. If you die in elven fortress, you spawn in goddard. If you die in rod, you spawn in giran. If you die in nornils, you spawn in rune. If you die in battered lands, you spawn in aden. Get my point?
-Add clan skills to the donation list.
-Code up a boss event. Say the boss is Antharas, make it REALLY hard to kill so you need maybe 80 people to kill it.... But make it so it gives 1k coins or so to each person who joined the event.
-Once again, change the oly map... PLEASE.
-Make it so your skills have no cooldown when you join oly. i.e if you used celestial shield 2minutes ago in pvp @ battered lands then got ported into oly you could use celestial shield again.
Ill have more in a few days. Keep reading the suggestions plox