I play KSP1 with a HOTAS too and I find that more fun, even easier. I tested it in KSP2 myself a few months ago and it turns out the functionality is partially in there already, but IIRC only pitch and roll worked for me, not yaw or throttle.
I'm interested to hear what the devs would say about this too, but I don't expect them to make it fully supported anytime soon. I really hope they eventually do though, because I find it much more intuitive to fly planes in atmosphere and dock spacecraft by using the fine control of a joystick instead of a keyboard (precise control mode helps a little, but it's not flexible enough for me personally). KSP1 also lets you map the controls differently depending on whether docking mode is on, and if it's in LIN or ROT mode. I know most people don't use docking mode with a keyboard, but with a HOTAS it's kind of necessary unless you happen to have 2 sticks or something.