Well I'll tell you what. If you don't want to go public beta (and that's completely understandable) but you still want some outside input, hit me up privately and I'd still be willing to take it for a spin. At the end of the day you need to do what you are comfortable with. I do like the idea of the hot air balloon, though, so I hope you at least stick with that!
Maybe you can submit your current version to Twin Cities Playtest? It's a 2 and a half hour session where people come in and try out games. It's recorded so you can see how they discover your game and what was good or bad for them.
Here is September session:
Just been doing some more testing locally. Since some players complained about having to keep looking at the altimometer rather than the balloon, I tried a new version where the airstream arrows are above and below the balloon.
Testers liked this better, but some still wanted to see the airstreams in the context of the height available to the player. So now we have an altimometer that appears when you are not moving, and close to the balloon.
If this tests well this week, I'll make a better job of the non-existent in/out animation
Holy moly! How do you have such a good eye for graphical design? I envy you