PBY is a scout plane, that's the only thing it can really do. It's top speed is bellow 200mph. If it does get added I don't see anyone flying it, you can scout on a bomber that is faster and is capable of defending itself.
Adding PBY is not like adding any new plane. It would require new codes that would let it land on water. This requires just way too much work just to have one airplane that no one is going to fly.
Jester, you say you'd fly it and I'm sure you will. But how long do you see yourself flying a slow & defenseless plane? It will get boring sooner or later, and with this plane it won't take long.
Tell me, what would you rather do:
A. Take off on the PBY, find the enemy CV, and hopefully not get shot down because it would be very easy. Than go back to base, take a bomber and fly to the place where you saw the CV, because those two trips took you so long the CV would already be gone and you'd have to find it again. Then when you finally found it a second time you can finally destroy it. Or instead of going back to can report it's position on country channel and have someone else get all the credit for your work.
B. Take off on a bomber that is twice as fast and can actually defend itself, find the enemy CV and destroy it.
Don't know about you but I think I'd go with B.
P.S. You do realize that there is already a PBY thread on the first page of the wishlist forum, right? I know this helps me increase my post count because I can post my opinion twice, but in the future let's try to stick with one thread.