Originally, I was going to try tool changing from the start, but I'm more interested in getting something going, now, that's a bit more proven, and easy to implement (which now includes CoreXYU/XYUV). There are several things I'd like to try, but embedding TPU into prints, choosing to print coarser stuff faster, without swapping hotends and nozzles a lot, heating it and venting it out a window (for funky fuming filaments), and to make it cat-proof (spools need to go in the enclosure, too), are the key things.
