After a series of unfortunate events, I've been more or less forced to ditch the my 60D. I have an entire system built around it, but it's now too heavy and cumbersome to be carrying around like I once did. This started hours of research on where to go. The downside is that I can't get any hands on a camera for a while. Hopefully my reasoning can help get me going in the right direction.
MFT: I really like the size and weight, but the aspect ratio and crop factor bother me. 300mm is still 300mm at the end of the day, there's no magical magnification turning it into a 600mm lens. Also I've read that high ISO is slightly worse than my 60D. Images also lack the contrast and depth of APS-C. Premium build quality that I loved a few months ago.
Fuji: Excellent image quality, but no IBIS and no weather sealing until the X-T2. Not sure if the RAW issues are solved yet. Lenses are a bit pricey, but excellent after sale support and are very good. I learned photography on a Fuji compact, so I am a fan of theirs.
Sony: Very good IQ, but the crop sensor line looks to be on borrowed time. Battery life issues and menus are confusing. Sony seems to be pushing FE, and that does not solve the size and weight issue. Flat shutter release causes ergonomic issues. Everything else is really, really good.
Canon/Nikon: Home. Compact DSLRs are about the same size as the high end mirrorless offerings as well as similar in weight. Build quality is worryingly bad, even up to the prosumer models. Materials have started to feel continuously cheaper. Still no 100% viewfinder on lightweight models. Issues with video recording compared to lots of other cameras out there. Makes up for everything with good color science, excellent customer service, large lens selection, better grips, battery grips, and superb battery life.
I'd love to hear some opinions before I head into the local pro shop and talk to their people about it when I'm finally physically able to. Or feel free to tell me I've gone mad and to stop being so analytical .
Side note: I do read all replies and am thankful for them.