It is the little things that matter, heh.
For about the 20th time I wish I had a mirror function inside the GUI.
Here is the scenario. Item on bed. Copy it and paste a new one.
Then realize they need to be mirrored against each other.
Only solution is to back out and redo the design entire with a mirrored one next to the first.
Would be a huge time saver - at least for me. Also help with those edge lit items that you forgot to flip so engrave is on back.
TL:DR Need a mirror function for selected item in the GUI.