I find the controls of this game to be frustrating, which yeah is out of your control, but there should be ways to minimize that frustration. I can't pick up characters when they are stacked on top of each other, meaning that if the delivery point has two of them stacked up, you need the spinner to hit the guy on top, otherwise you're soft-locked. If a block is on top of an inactive character and the spinner selects that character, you're also stuck. You can't pick up blocks while they're in the air (e.g. falling from a platform lv. 2). I'm just frustrated at the control scheme. Maybe it's me misunderstanding, but I am frustrated. Also missing music/ambiance.
Aside from the rant, visually it looks great. Perhaps the screen can shake when you throw it and it lands? That would put good weight to the boxes!