I am suggesting a few more features to build mode to help with ease of manipulation of Prims, just a few QOL additions that I thing would be very well received.

Option to evenly space selected Objects, say I have 5 objects 10m distance between each side with 3 in between, my suggestion would be to allow me to select all 5 and hit a button to evenly space the ojects within the 10m edges

Align options for multiple objects:

Be able to select multiple objects and align to a certain edge ie N,E,S,W