A button (mouse button or whatever) to actuelly "pick" what we are looking at for construction would be very nice. (the same way "select block button" work in minecraft)
This way, if what we want to build is somewhere near us no need to go in the menu to select it; just look at a structure, and press <the_new_shortcut> and bam! contruction mode with the correct structure selected (the one we were looking at).
It would be very useful when wanting to optimise a factory 'cause we can spend a lot of time building and destroying structure before getting the result we want. And with this shortcut/mecanics it would be way faster.
Just an idea.
Thank you for the game.