Do you have/want a way to quickly swap hotends/extruders? (Patreon)

The Hero Me currently supports three different X gantry quick change systems. The xChange, Mutant, and the Hermit Crab. These allow you to quickly (15 seconds) swap out the whole X gantry (hotend, extruder, ABL, cooling ducts, & other components) for another hotend setup, or to a completely different tool (laser, pen plotter, vinyl cutter, and others). 

A quick change system is also great for print farms to have replacement extruder/hotends ready should something fail on the business end of a 3D printer.

Is this something you have or are interested in? I'd like to get an idea of how useful/important this is to 3D makers. Please add any info you have on other solutions or questions you may have in the comments. Thanks!