Naval is still around, actually, and has been made easier to use but harder to gain an advantage from. You can now declare a naval invasion if you have even one more naval card than your opponent - no longer are entirely naval armies required - but, while you do get the first action as the attacker, that action has to be performed by a naval card in your army. So nothing out of your hand, and most of your OMG HUGE ranged attacks are on non-naval Tsuruchi. Oh, and Ranged Attacks no longer require you to bow as their default, but they also don't seem to be combinable any more.

I hear the 'kensai' trait will let you attach two weapons as of the next expansion, but I've not seen a rulebook to confirm that.