Not sure if it was metioned already but it would be nice to have a quick preview button in the Editor.
For example: placing and arranging a group of units.
I've done gliding for over 4 years at a local glider club ( http://www.gezc.org/ ) here in The Netherlands.
It is one off the least expesive forms of flying, that is in club formation.
It costs me around 900euro a year.
I've droped my license about 10 years ago due to other interests