I don't think there is a next version of 4d. I'm not intending to do a pwipe or a new codebase. I've tried those before multiple times with muds that had playerbases and it just doesn't work out. No, I think the way forward is an evolution of what we currently have.
I have to agree with Once on this.
A step by step development would be the best way to go. That way the evolution itself would be interesting, and we wouldn't have to wait an indefinite time for one big change that might never happen.
So should I add Stamina to the priority list?