It might make more sense to design the new site with a goal of merging in the PM stuff at some future point in time. That way PM6 actually gets off the ground. Trying to rewrite PM5 from scratch may prove to be too daunting for whoever volunteers to work on it. Plus it would likely be heavily tied to how much time Corion, tye, and jdporter can spare to help with the migration, whereas a new PM6 site wouldn't have those constraints (unless they ended up being the only ones working on it). Or maybe have one team focused on PM5 migration issues and another on developing the new site (with obvious feedback from the PM5 migration team).