I have had time to play and in doing so have made a small list of things to add/change to make it even better
1
It would be nice if the paste function did not paste on top, it is ok for one item but if you want to copy a yard or similar arrangement for use elsewhere you have to individually pick all the parts to move which defeats one of the great things about CAD.
Can you make it paste to the mouse but floating so that a it can be aligned and then a simple left click will drop it?
2
While moving both the the scroll and zoom are disabled which means a long move requires:
Zoom in, select part and set to move
move to a place on the current screen where you can find it
zoom out
scroll but keep the part in view
reselect part and move close to new location
zoom in
select part and move to final spot
The standard in CAD is to:
Zoom in, select part and set to move
Using the mouse wheel, zoom out, scroll, zoom in, drop
3
Multiple baseboards for modular layouts
4
The ability to mirror a section/yard (and have the points change from left to right/right to left in the parts list) would be handy too
You have a very good start, keep up the good work.
Tony