I remember my time, i played with the lineage server-emu thats javabased, it took me some weeks to find through all the code and still i have to say i don't understand many there. xD
i think instead of taking pvp pout all together you should either make it have an on off switch or use a scarfe or item system like silroad uses... thts just my oppinion.
1. i think sould transfer some korean chantra items to the private server.
2. i think you sould add low level capes or guild capes to the server.
3. create new physics engine, so you can add destructible buildings.
I think for all his work, he should open up MC shop (Malivictus Credits) 1.00$ = 100 credits & a 1 week talisman would be expensive like 30 credits or 25 :P