As a beta tester here's my take:
The Good: An interesting take on the Wargaming Team vs. Team model--way better than the competitor (navyfield2)
The Bad: Wargaming Matchmaker Balance (tm)--I don't know what the malfunction is at wargaming, but they have ALWAYS had issues with matchmaking in their games. WoWS is no exception.
Lack of "interesting" options. So far the american tree is the way to go for any ship (CV/BB/CL-CA/) The IJN has a decent DD line, but overall there is very little balance between the trees.
Thus far wargaming has been content to push premium ships out (i.e. pay-to-win in a supposed beta) rather than expand nation line or add additional.
I'll play it for boredom's sake but it is definitley, thus far, a disappointment.