Its not that hard to figure out.
Who would fly it, what would it add to the game?
Its value is that it can operate from areas without runways over increadably long stretches of ocean. Those are useless attributes in this game.
If you had to find the carrier in the game instead of dar bars showing up as soon as they launch aircraft then maybe it would be useful for that.
If pilots could be rescued from the water for some in game purpose then it might be useful for that.
Maybe if hunting the resupply barges were a meaningful facet of the game and it required long range or surface search radar to find them.
Or if finding subs meant something.
But not one of those things are true in the game, so all the cool flying boats in ww2 are just a huge waste of time for HT and co that could be spent on an He177 or an Il10 or a panther tank or a Bearcat or tiger cat.
You know, things that would get alot of use in the game.