Hello sama,
I feel the same way about the EOS M. It's small, it's cute and just fun to use.
I don't see how people always get so smug about a little APS-C camera, as lighthearted as the M.

About your little rig:
Love it!
I'm actually currently tinkering on one myself. So far I'm not beyond the LEGO-TECHNICS phase (
which in my eyes is a great alpha-stadium tool for any kind of DIY-gear 
), but the head of your dolly seems like a really nice fit for what I have in mind. Thanks for the inspiration!

I will continue to join some other forum members to have fun playing with my new toy - the M and to give life back to this bad boy of the Canon family. I have prepared to spend several hundred dollars buying lens, adapter and accessories for it. Yes, I enjoyed buying toys more than shooting videos. I will do some eventually though.
I for my part bought a Leica M adapter, and combined with my used Voigtländer Classic 40mm/1.4 it produces very capable shots, and together with the EOS-M it was only 700€ (converted that might be 1k USD, but electronics are more expensive over here anyway...

)
So far I was unable to do anything more than test-snippets, that I ended up editing to a kind-of-music-video, but as soon as I finished my DIY-slider I want to do some more creative shoots, like time- and hyperlapses (I run MagicLantern on my M, which makes that really easy thanks to the Intervalometer) and put more effort into editing for nice results.
Here's my short, basically just the EOS-M-Voigtländer-combo, shot entirely open at f/1.4:
PURITY RING - UNGIRTHED