I posted a quick video showing how I'm using the plotter currently. It's far from ideal but also quite efficient. Basically just dragging SVGs from Sketch to the slicer. As long as the paper doesn't move we can keep plotting at different areas.

Apart from pen alignment, the core toolchanging part seems to work well now. Here are some plots I've done lately: 

> An image vectorized in Inkscape, 0.05mm

> Drawings from Wikimedia Commons, 0.7mm

> Pioneer Plaque, Paris Metro map (using toolchanger, misaligned). 0.05mm

The paper curled at certain points but overall I'm happy with the results.

> Paris Metro, Pioneer Plaque, Telescope. 0.7mm