In my opinion this is a rehash of level bombers being able to dive and the unrealistic ability of our Lazar norden bomb site. Neither of which HTC is concerned with remodeling.
The only capital ship level bombed by heavy bombers was anchored. Not suggesting b25's / 26's, Beaufighters and Sunderlands etc, didn't do their fair share of depth charging and bombing of small ships and subs.
The problem, if that's the right word, is that in order to launch LVT's our fleets have to be within 8.8 miles (1 key pad) of the map room. Thus unduly warranting a CV to be in the front line with a main battle fleets beach head attack. This as we all all know never happened. CV's were kept well back.
So here's a suggestions (prolly kiss of death due to some copy write law, public domain blah blah) bearing in mind level bombers will not be re-modeled. How about enabling LVT's to spawn only in a area of 17.6 to within 8.8 miles of shore (2nd key pads distance). None spawn of LVT's any closer than 8.8 miles (1 key pad) because we don't want "dry spawning" at the map room do we.
At this distance the 8 Inch guns are still VERY effective if used

. Either side could obtain more alt if desired. Better chance of CV cap being implemented

They could even add more shore batteries and longer or more PT spawns to keep the fleet right out on the edge.
Just pissing in the wind.
Oh P.S Explosive pressure wave under water is more effective than in air.