I considered an 80D as an upgrade from my T6s, but went with the 7d2 instead. Burst shooting is significantly better in the 7d2, not because of higher burst fps but rather because the dual processors clear the buffer so much faster. The buffer on my T6s filled fast, and then you're stuck shooting at like 2fps until the buffer clears. I do miss the articulating touch screen sometimes, but that really comes down to having the best tool for the job at hand.
It all depends on what you shoot. The 7d2 is great for moving subjects especially when you want to get just the right angle or look by shooting a long burst. If you primarily shoot static targets and use a tripod often you will probably prefer the articulating touch screen of the 80D which allows you to shoot from a variety of angles and get your shot framed and focused perfectly. I ended up picking up a Canon M3 as a backup to my 7d2, for shooting landscapes, portraits and other slower-rate shooting where live view is more practical to use.
If you buy for specs only and not for the features you need for the type of shooting you do you're just going to end up with a fancy camera that may or may not fit your needs.