Yes, working on it!
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From a user perspective, let me raise a possible issue: the filament is exposed. Is it possible to have a simple sealed space for moisture protection? (Adding acrylic into the slots of the profile and inserting silicone might be a good direction, but this is not a core function.)
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You’re a genius. Has Snapmaker contacted you yet? 
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Please keep us updated. I’m already curious how far the project will go.
A chamber for the filaments that also draws out moisture would be the icing on the cake.
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If you use these 8 spools of filament together with a color blending software, you probably won’t even need 16 spools to directly create colorful models!
Red, yellow, blue, green, purple, black, white + support/water-soluble material — that makes exactly 8 spools.
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I have transparent CMYKOGVW (extended color gamut) , just waiting to test it out!
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I have a sidequest that’s almost done that will allow much more freedom in that regard!
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Great job. Well done on the sheer dedication to purpose!
How do we follow up on this?
Are you launching on kickstarter or collaborating with snapmaker maybe?
You have ticked off almost all the features I had in mind for an ideal tool changer + AMS setup. The only major thing missing that I would like to implement is a way to prime while the tool is docked. Something along the lines of replacing the rubber ooze stopper with a small motorised rotating cylinder with an appropriate easy release surface and a scraper on the bottom side. This should allow purging and priming in the same sequence, as long as it was pulsed rather than one continuous extrusion - think grains of rice “poop” rather than noodles.
You mentioned somewhere that you initially tried a setup where all filaments could be loaded into any toolhead - do you have any photos? Do you think users could mod your kits to allow this without too much trouble? I think this would be very useful in a mixed nozzle size setup, with fine nozzles for outer walls or full spectrum colour blending and details, and a large nozzle for inner walls and infill or strong mechanical prints and worth any PTFE spaghetti.