Great polish - well done! The gameplay itself is a bit rough for me - the movement is restricted on the vertical axis which is limiting but OK. For me the problem is that it is hard to coordinate. The size and positions seem to be a certain way but often as I aim for the scrap the vehicle skips it because it was not above it... It can get frustrating.
UPDATE - well after many attempts I cleared the first level and found out I can make upgrades including to the pickup range. I like this progression. It does seem like there is much though put into the game and there are small hints everywhere as well as different ways to hint (for example on the conveyor belt hovering over a piece of scrap shows on the monitor both "for sale"/"for disposal" as well as a thumbs up/down.
Good luck!