Pardon the pun, but don't hold your breath. Underwater content has been heavily requested. Though understand how alpha and then beta processes need to be followed before a launch. Underwater milestones would be a long long ways off.
On that note, dreaming of the launch tubes is awesome.
Watching explosions or things being destroyed in Slo'mo gives me a wierd sensation...like I'm a super being with this uber vision. Also making it a sublimate event...thats even more disturbing and thrilling!!