I really like playing Subs in this Round, BUT:
I personally would prefer that you DON'T add them to Coop, Random, Ranked, etc Battles as a Normal Option. IMHO it really would stop some (most?) Players to play those Battles or you just have Subs in one Match.
When you last had Subs on the Live Servers, you had a separate Battle Mode for this Shiptype. I REALLY would prefer THAT!
Otherwise, the Mechanics for Sailing them is easier to handle now with different"Set" depth-planes for the Submarines to which they can dive now, Turning of Torpedoes onto their Pinged Target could be a bit faster, in my T10 Battles the Torps were so fast compared to their turning around, that they even on 7km on a double pinged (sometimes even 3 or 4 times pinged) Enemy ran hopelessly away without a chance to hit the enemy.
Also, with my Live Account, it was not transferred into PT, maybe because i only did Round 2 (because of issues that stopped me from playing Round one).
I at least hope that the rewards arrive this time within the coming week (if i remember right, around Friday?)
Best regards Guys!