when crafting, there are 2 things i think would help especially when building structures.
having the option to turn on and off snapable walls would help out alot. like place the first wall than the next one would automatically suggest to snap the the next kinda like no mans sky or fallout 4 does when building or your can turn it off and do free placement and precision editing.
the second folds into the first its a grid. so you can turn on or off a grid so when you are precision editing you can make sure thing are aligned. its nice to have something nice to reference next to both vertically and horizontally i thing the grid would be easier than the snapping but i think this is something that would greatly enhance the house building area of the game