That’s kind of how I feel about the M2 as well; with the C-channel Z-axis I’m building I’ll end up with a similar machine albeit without the new electronics.
However, given the quality of the electronics I’ve received from them in my original kit (one heatsink fell off the moment I got the thing out of the bag), I’m not holding my breath too much. They’re still shipping shields based on the original design as well; not the improved, TLE5206-based version. Luckily, I had already got one of the new shields when they came out (I originally intended to do a from-scratch build and source everything myself).
Everything else I got from them was fine, and they were the only one that originally responded to my inquiry about getting a kit without the electronics, so they do have good customer support, at least.