How would it benefit the server: It'll be easy to check what event will come when you want to play on server 2/3
Potential Issues/Exploits: none
Additional notes: A timer and name on server 2/3 of the next coming event on server 1 so people can check for their daily event while playing on S2/3. this will make it so they don't have to be on server 1 all day long waiting for their event for their daily when they want to base on server 2/3.
Place the arenas under the map and make the surrounding area under the map a barrier so people can also not glitch down there or just fix the mountains