This is defiantly an 'Marmite' situation. you are ether gonna love it or hate it. personally I am carefully overoptimistic.
There seems to be a solid promise to how subs are going to work and how they will affect game play, A starting tree of only 3 layers is a bit sad, but i understand it. like air craft carriers they have a unique way of working and challenge players to a rethink how they play.
I also hope that this means that we will see ships like the Advanced Black Swan class....
............................, not much in the way of guns, but loads of Depth Charge launcher & Mortars,and Top of the line Sonar and Hydrophones