As a value proposition, it looks like the T7i/800D is the best value camera ever made.
I specifically like the battery life ratings over the 750D, it looks like Canon got a lot of the kinks worked out.
The T7i/800D should be one of the best workhorse Rebels to come out in a long time, especially once the price drops a hundred dollars or so.
The 77D is just too close to the price of the 80D for me to think it's actually worth the premium.
At the same time, the features of the 80D are too close to the T7i/800D as well, hopefully in 2018/2019 the 90D will have more to differentiate itself (like Dual Card Slots for a start).
The 6D2 is probably going to be even more popular than the original 6D, I would just need to figure out how to justify using a $2,600 (Canadian) body when my most expensive lens is only half that, and as far as wildlife goes the new Rebels give me pretty much everything I could want (minus Dual Card Slots).