I'm taking a break from building (planes) in BR until I know for sure what 1.4 will bring. The catalina is already of my long list (70+) of planes to build but I'm afraid there's no telling when or even if I ever get to it depending on where the game goes regarding prop planes and bombs etc.
So TLDNR: Catalina already on long list, no idea when I might get to it. :)

can you make a pby catalina that floats

The changed aerodynamics system in 1.3 gives basically NO lift at low speeds (< 100-120 kph so this plane has some serious issues getting off the ground without making its speed that of a Spitfighter, and the fact that control surfaces do next to nothing until you reach 100+ kph makes take-off extremely tricky. And that's at 144FPS single player with nothing else spawned in. I'm not sure you can even take off in MP with FPS under 60 TBH. Sorry but that's the way the game "works" right now.
Over 200 kph on the other hand you have all the lift you need and more so then it's prone to go nose up, especially after dropping the bombs, even with some serious trim action going on. I've compensated with an extra trim flap that reacts to you dropping the last bomb (Num7) so it's not unmanageable but still very noticeable.

So here's my attempt at adapting my Swordfish to 1.3 aerodynamics. And yeah 1.3 is sadly as bad as 1.2. All the main issues with the "dynamic" system remain (like sudden increase/decrease in lift depending on speed and angle) with an added bonus of non-esxistent lift at low speeds and little to no effect of control surfaces, especially at low speeds and when they are not at the optimal 22.5 degree angle. And we still have the major two issues from 1.1 remaining as in extreme speed loss when turning manoeuvring in any way, and little effect of control surfaces, especially on larger planes. These two can, according to FLuppi if I understood him correctly, not ever be fixed since that's how the game engine works. Period.
So on top of that we get a "dynamic" system that's so dynamic it is utterly unpredictable, thus making it impossible to compensate for, and in the end just cr*p IMO.
If this is the system we get in the official release of 1.3 prop planes are pretty fooked. Again.