They are actually mostly done. I have two hurdles, both of which involve time: combining the land-ownership data that I have (lots of overlapping/conflicting areas), and compilation of the maps. While it takes 2 minutes to compile all of Northwest Trails, it takes 2+ hours to compile each 1-degree by 1-degree tile of Northwest Topo. Plus, once compiled, it's immediately out of date!
I'll work on getting out most of the tiles comprising the Seattle area and Central Cascades in the next couple of weeks or so. I'm assuming this is the area that would currently have the most demand.