OK, my entry is posted. The only parts unfinished are the remainder of the wisp lores in post 1, and the rest of the encounters/adventure ideas in post 2. The latter isn't wholly necessary, so if I don't finish it in time for the deadline I'll just remove that section and leave it till my convenience.
I would love some commentary on this stuff... it's pretty massive, so I hope someone's willing to read through it in-depth.
After the contest, I'll be adding crosslink material to other subsystems, which will mostly consist of feats for alternate power sources (spell slots, essentia, etc.) and then things like wisp-related spells, soulmelds, maneuvers, etc.