This is a twist on the changing it back to 48hr system, seems sorta ok to me.

It is going to make something easier to level now since you can pour all your leves into 1 thing now instead of being forced into 8 fighting/gathering and 8 crafting... now you can just put in 12 into fighting per 36hrs. So faster leveling now on 1 type of class (if you spend say everything on battle leves), slower overall since we are losing 4 leves per 36hrs.