My main issue with private servers is you know Jagex will cheap out on the infrastructure

We only got the latency issues fixed in the last year or two and we're hitting semi-regular login issues again. Imagine throwing 100+ worlds with custom settings on top of that.

I'm sure there will also be a redirection of dev time towards them plus the player base splitting issues we saw when they tried out fresh start. Best we can hope for is it tanks as badly as fresh starts did