Repro:
While building either as astronaut or in build mode, there is no keyboard based option to roate a block, only the mouse wheel.
Expected:
As a user I should be able to bind keys to common functions, and since building is so fundamental to this title it should be possible to keybind rotating a block. At very least a left/right cycling through the blocks
Suggestion:
In advance build mode, while holding left ctrl the movement keys W,S, A, D don't do anything. They could be overriden so that they rotate the selected block in relevant camera plane. That is, W/S would rotate the block along the camera X-axis, while A/D would rotate around Y-axis, and for completeness Q/E would rotate around Z-axis. This would allow player builder to quickly find the orientation they desire.