Yea, I agree. This gamemode seems a bit too advanced to be made in BETA, but I think this would be more than possible in the future. 

Yea that fits in way more.

I just didn't know any examples of instruments because I'm not much of an expert of instruments.

Yea, Rogues should be buffed.

Sandbox can end? But it's SANDBOX!

Yeah, the matchmaking will be ingame like Eclipse. They don't start until the amount of players needed are there.

The waterfall specifically in the middle could boost the stat of your minions if you pay.. let's say 10 of each resource. There could be buttons you choose between to choose which stat you want to have boosted. For example, if my team controls the middle the longest and I'm near the waterfall but my teammate isn't, I get to choose the stat but my teammate(s) has to choose for themsleves once they get to the waterfall. There should be 4 options: Attack, Speed, Increased Blocking, and Speed. If I chose, for example, attack, my minions near the waterfall get the stat boost. There should be a visible circle around the waterfall so I know how far I can go until I lose the effect. Of course, this should only affect me, not my enemies or allies. Hope this was a good idea and it gets used. Good luck with the coding!