So far, I am ecstatic with what I am seeing in the playtest, but the one thing that bothers me at this point is that your character regains all of its lost hit points after a full 8 hour rest.

I would rather see this as an optional module rule than part of the core, as it means that a character can be near death, and as long as he has 1 hit point going into a Long Rest, the next day, he wakes up miraculously cured of all injury.

Otherwise, again, I am really liking what I am seeing from the playtest rules.