I've owned an M50 with the standard 15-45mm kit lens and the 55-200mm zoom for more than a year. It has become my go-to camera for street photography and travel. I have a 6D Mark II and many lenses, but I find myself grabbing the M50 for all but my most serious photo projects. I love the articulated screen (I rarely shoot video, but the flippy screen lets me shoot low- and high-angle still photos in portrait mode, something that would be impossible if the screen just tilted. I also enjoy using my Fotodiox EF-M adapter, which lets me use my Sigma Art 50mm F:1.4 as a nice 80mm portrait lens. I would certainly consider an upgraded Mark II version of the camera, but I would really like it if it incorporated three changes:
In my opinion, the Touch Shutter feature is far too easy to turn on. I rarely use it, and it's aggravating to touch the screen while selecting a focus point and find that I've just taken an unnecessary photo because I've managed to bump the screen and accidentally enabled Touch Shutter. Please, Canon, bury this annoying feature deep in some sub-menu!
On the other hand, please make the Flash Control feature much more accessible. I often use the pop-up flash, and having to open the main menu, select the first panel, scroll down to Flash Control, find the "Built-in flash settings" line, and finally adjust flash power is just too slow and fiddly.
Finally, although I love the swiveling screen, there are times when I'd rather just use the EVF and not worry about checking every shot. At those times, I'd like to swivel the screen inward to protect it, but then there's no way for me to select a focus point! I realize this is a screen-controlled camera, but having a way to steer the focus point while using the EVF would be a wonderful improvement.