1. I think you should get the plugin fastfood, because when its not on, you will die after 2 hits, and it decreases ALOT of the fun to pvp. I would say it is a must have.
2. Get the plugin obsidian destroyer, so you can destroy obsidian with TNT, or you can just make you house of obsidian, which is not that hard to get. And then be "Unraidable"
3. I dont know if you have it already, but make a "Server" shop where you can buy almost everything, because i can only find player shops (I think), and then your money is almost useless.
4. Make a new spawn, its a bit confusing. (But i heard you are already working on that) I just want to know when it will be done :-)
5. Maybe add TNT to the donation packages.