After playing some more:
On the old feedback points:
3. I think the idea is that the level is infinite and that's pretty clear when your stats are kept after dying. Still, I think it could be fun to have a "max length reached" stat, as some sort of hi-score.
4. I think this one is not relevant anymore.
6. I'll add the fast moving chickens and sheep to the list for this issue as well. This is no longer a problem when you have the crow hat, which enables good control in the air.
New points:
7. I think there is a bug in the shop related to the Sheep Wool stat. The crow hat costs 10 wool, but I could buy it with only 5 wool, and it didn't take me any wool (I still had 5 after buying it)
8. The control scheme for the first two hats - to use them, you need to press the button on the bottom left. It's not clear at first that it's a button. The arrow of the "Throw Corn" button at first made me think I need to do the same gesture to throw corn. Also, this is probably a good control scheme for the Android version, but for Windows I propose using the right mouse button for the extra action.
9. I found the Straw and Chicken hats a bit useless, but it may be just due to the control scheme. Scaring chickens often makes them go your way, which often hurts. Throwing corn contradicts a bit with the shop mechanic, but maybe you're supposed to use it very sparingly, so it might be useful if it's easy to perform it.
10. I really love the Crow hat! It makes the game easier, which wasn't that noticeable with the first two hats. The only small criticism I have is that it took me some time to realize that I'm taking fall damage.
Edit:
11. Just reached the second area for the first time (after the rain), and was disappointed that you don't start from there after you die. Not sure I'll ever be able to see any later areas that way. :(