So, after messing around mapping Uganda I was inspired to try and make the area around home as close to 100% mapped as possible. Not necessarily addresses, etc. but 100% land-cover (not zoning/administrative) but looking at imagery and creating a 'raw' "this is what is on the ground" map. I started with simple/small polygons for 'heavily' forested areas basically coming off the administrative boundary for Pike National Forest, but that didn't really work the way I imagined and also would have been extremely tedious, so I started over with a larger polygon delineated by 285, 126 and the South Platte River - made this landuse=forest and then used relations to 'insert' meadows, rocks, etc. I tried doing a complex relationship where the aforementioned forest was the outer polygon with residential as an inner polygon hoping to make forest/meadow/etc. inside the residential areas part of the outer polygon - didn't work, not sure why; seemed a multi-multi-polygon relationship isn't behaving intuitively. Anyway, just finished up Burland, so please feel free to check it out and give me feedback.