Yes, thank you for the feedback!
A grid would have been nice, but alas, I didn't have the time to further improve the attachment system. It was already a pain to make the attachments work with the collisions, moving wagons and all that (in fact, it's probably still buggy).
Also true regarding the shading. The trees are also one of the few assets I didn't make myself, just to break up the green monotone background a little bit. Definitely something to improve.