The sad part is that I don't see anyone fit for the position currently.
So I doubt new Helpers will come soon.
Another thing is: The fact that I don't find Hackers around except in Assassination (Seriously kids, if some of you want some free reports go to Assassinations Deserts ;) ) already says that we don't need more Staff.
Sentinel is doing a great job with the 1.9 Servers (Don't enter 1.8 -> All those salty kids are Hacking there, lol.). In Skywars, Survival Games, Duels, I honestly see no rule breakers. Only some teamers here and there, but that's it.
I don't think we need more Staff. We still have some Helpers that need to get promoted to mod, and when that happens I'm sure the reports will go faster.