"Is it still too fast with the Shift held down (which reduces sensitivity)?"
Ok, i tried it again. Shift definetly helped with precision.
"Was it because of the high speed of the Power Bar? or was it something else?"
Yes, it seemed you had to pretty much double click for weaker shots, but power of those varied quite a bit.
"I didn't quite get that. When exactly?"
Or maybe that was other way around. In some places turning speed was way faster, so that probably just confused me when i played first time.
"In the full game, the levels are procedurally generated, so I can't do that. All demo levels are pre-generated."
Oh.. in that case you could maybe add some other unlockabe stuff like new characters or hats. I think having something to unlock could keep players playing for longer.
"What about the controls? Did you understand that you can change clubs and shot types?"
I did notice that there were different clubs and shot at the end, but i didnt really play around with them too much during my first playthrough. Tried them out bit more during second play through. Definitely helped me to get better shots in some cases.