We should have at least one seaplane of each country (US, UK, Germany, Japan, Italy and SU) and use them mainly to pick-up pilots in the drink and launch troops( by dinghy or chute) for captures. No submarines yet, so pointless to have ASV features...
The S&R of pilots should be a very highly rewarded activity, in points and perks, popular to those who like to RTB keeping kills, points and perks.
There could be a kind of trade here, like: - I get you out of the water, you keep your score, but I get your points and perks...
Of course, getting shot down before delivering the package would be a total loss for all...
No submarines yet, so pointless to have ASV features...
At least the ubiquituous Catalina!
Sparrow