4 Other games
I often get burnt out on games like ARK, and dont play as much for periods. Been playing some Space Engineers and Empyrion Galactic Survival lately but only singelplayer. I know Fusiongamers run multiple ark servers now, but have you considered setting up servers for other games? It would be a nice break for people getting tired of Ark, and also keep them in the community. It will also help keeping people donating to keep servers up.
If interested i vote for Space Engineers or maybe Empyrion.