[AQuantized]

The ability to draw and connect straight lines is much more fluid than any system design or general drawing tool I've used, very smooth. It would be great to have a free drawing tool on top of this.

The drag function is quite janky insofar as you need to drag then release on an object, then click again to place. It should probably be either click once or hold down lmb.

Being able to import your own images if probably the most essential feature you could add.