I'm contemplating the condition of my 7Dii. It has seen it's share of hard knocks, the most serious being tumbling over a leaf-covered curb on my bicycle while covering a marathon in a gale. The camera came through it better than I did. Given what seems to be the immanent demise of the SLR platform and doubt about how long Canon will service the 7Dii, I'm looking at mirrorless. Note that I am seeking a replacement; I'm not on a "take my photography to the next step" sort of quest. I'm not interested in a 135 sensor as I'm happy with the APS-C format and I don't see a crying need for a 35mm sensor. I also have a suite if EF-S lenses and Canon speedlites. I'm also not looking to switch brands, to, you know, "take it to the next step".
The R7 seems closest to the 7Dii. Has it been dumbed down in any way, like what was done with mid-range xxD models? (I also have a 40D and resisted the transition to other xxDs for this reason.)
Having experienced shutter lag and view-finder lag in early mirrorless cameras that I happened to borrow, this is a concern, as timing is often 99% of what I view as contributing to a successful photograph. I don't as a rule pray and spray. I'm also concerned about battery drain, as I sometimes venture into areas with no electrical service available for recharging. (I turned off GPS in my 7Dii to address this issue.) I have shot video on rare occasions, but this is not an important factor.
I would appreciate any useful perspectives.


