Yeah, I'm having fun playing with Dungeon World right now. Clearly though DW is VERY heavily a story-telling system. In effect there really are no definite rules. The PCs abilities suggest what they can do, but the DM really decides the order of events, what happens, etc. There are obvious issues for a lot of folks with that approach. So my question is how can this hypothetical system gain some of the nice feel of DW and still have some rules? There are obvious issues, but I'm thinking a more narratively engaged power system has to be figured out. DW is a cloud of nothing on rules, and even 'classic' D&D (say 1e) is often quite vague, but not in a helpful way. 4e OTOH just seems to get in the way of some people's story telling, and seem dry, so you have to somehow add a story-telling dimension to the hard-rules-coded power concept. Maybe there's a sweet spot in there somewhere.