Thanks for your kind words!
The last couple of patches decreased the momentum fall-off a lot - I'm sure there's still room for further tuning, but I'd like to give it some more time to settle before I poke around with that more. I'm wary of accidentally moving the focus away from entering/exiting air streams at the right time.
Related to our other conversation, I got all of the game's core functionality up and working entirely with placeholder visuals and had a functional game before we brought any proper graphics in if that's interesting to know.