For a change of pace, I could make an Arena type world pretty quick. Like 200 size, a lot of maze with some open, obstacle areas, no monsters, no harvesting or mining, resources spawn in the maze. Someone like Roarion could admin it. Oh and "Death Before Disco" of course.
I know I made Labrynth a few years ago so I guess it would be similar but no monsters. All XP must be from PK and some crafting like blacksmith, alchemy, magic, etc. No NPCs either.
It would be good for me to make something, in order to re-familiarize myself with building and content so I can see what worked well in order to apply it to V6.
Let me know.