Thank you so much for your comment! Unfortunately we didn't have enough time for testing it in the long game, we'll patch that up if we update the game.
That's an interesting bug, because when I was developing, I used some hot keys to add resources to the rocket to see if the upgrade buttons are enabling properly, I guess we should test it out with the backpack as well.
Totally agree, we need to balance out the resource prices and levels.
It it's okay to ask, how would you suggest to show if the hook can reach a target or not? Possibly highlight the items in the hook radius? Or maybe highlight them red/green when we directly look at it? Because when the items are moving, they could already go out of radius, so maybe the first one is more user-friendly.
Once again, thank you so much for your comment, it's very helpful!