Being able to breathe under water and not be irradiated is a big plus and the second level lets you swim unseen so it does add to some stealth abilities. Aqua boy all the way.
Pip Boy - without him I would be lost
Aquaboy assuming underwater exploration is a thing. I WILL BUILD ATLANTIS AND REIGN SUPREME, MY CEPHALOPOD AND TURTLE SUBJECTS WILL LOVE ME AND DESPAIR.
Toy Boy...
Or... I guess Action Boy... though I have absolutely no idea what any of those perks even do in Fallout 4...
I concur. More than anything, I need maps. Maps tell me good things.. "Where am I?" "oh, here I am!"