Simple, make a MYKO server where you start at 70 (which is max lvl) and with shells +8/9 and shard raptor etc +8/9, where all you need to farm is bosses and get uniques. This will make the pk very active coz ppl will want to get uniques and will be in CZ.
Also, you can make that kill reward thing in CZ where each kill give you 1 item and you'll need xx gems for y unique.
You can also add boss summon scrolls to pus for donators and it won't make them op (maybe at the beginning but it depends on the drop rate). And then you can do boss events aswell.
When the server evolve you can also add biffrost and ED items.
So what's your thoughts?