As was said earlier, I think book wipe will just lead to vets going after the newbies to get hold of their lost books again. Maybe it's a bit of an oversight on devs part (seen as Pvp missions have highest chance of dropping them afaik).
I have no issue with Xp/craft/knowledge wipe though.
Either way, congrats on setting a release date. I'm looking forward to population increase, hopefully hitting levels before the 1st wipe. I think all the gripes about the game will soon be forgotten when you don't have to sail an hour to find a battle in OW.
See you all after release!