At the moment I've got separate racks for each section, which is far from convenient for shuffling around modules. Is there an easier way to do that?

Also, key shortcuts for moving modules vertically would be nice too.
-- Mazz

If you click on Data Sheet in the rack planner power consumption is calculated by row. Does that help?
Also key shortcuts to move modules should work. Hover over a module, press enter, use cursor keys to move, enter to place ...

-- modulargrid

Ah excellent! I was using the "," and "." to move the modules left and right. I didn't know the Enter+Cursor Keys.
The Data Sheet is great for rows, but the Mantis and Go have separate left and right sections.