There's not very much value added in having another PK server that doesn't offer substantial new gameplay. We're talking about a bare-bones server with survival, arenas, and no add-ons. I mean, sure, it's the official one, but if you're banking on the value of players being able to interact with PK staff, that's probably not sufficient.
Furthermore, it's pretty hard getting a competitive edge in even a niche market like bending servers; honestly, it's a bit of a crapshoot. Other PK servers have already devoted years of man-hours in building an ecosystem. And for what? A few thousand dollars per year? A few hundred players? I'm not saying money and population should be the principal focus, but they do bring perspective.
I mean a lot of it depends on your vision. Do you want to grow the server and make money? Or do you just want it to be a place to hang out with devs? If it's the latter, you've already succeeded. If it's the former, you're going to fail at this rate. What's the value added of the official PK server? How do you make it so compelling that players from other well-developed, fleshed-out servers come and stay?