Server Plugins???

Hi, I am currently making a Server based off of SAO with more a of "Mining" Feel to it.
However, I can't think of any more ideas of what areas I will need.
I already have a Spawn (Consist of Shops, Portals, PvP, Staff Hall, Player Ranks, Donor Ranks, Donor Shop) Wilderness (Just a Normal Circle Spawn) Arena (50x50 square with obstacles and 2 stories.) Dungeons (I haven't Completed them yet as I am waiting to get a few Plugins).

Anyone have any ideas? My Brains Fried.