Its a really cool idea.
I think you used 0 buttons (idk if these hover things count as a button, but I dont think so), thats 5 Stars for the "Use of the Limitation". Good Job.
I would have made a button for the grabbing, because the wait time isnt so much fun.
Maybe you can add this after the voting. You dont even have to remove the timer.
I think a little bit time pressure would be perfect for the game, especilly in the levels that would take many time to aim :)