Yeah you can get ddosed if you dont change ot but you wont get ddosed unless some kid hates you really bad. But yea changing your ip takes literally 5 minutes and for some people it automatically changes daily so you should be fine
1.Remove gunpower,pearls,glowstone from crates and keys.
Why? It will get people to eventualy get out of their base and have to farm cuz that will get more pvp to the server.
2. Remove eff 10 or dont ban for it.