iPad Air user here.
"Borderline usable" on iOS 10 is absurd ! My iPad Air on iOS 10 works perfectly fine and I rarely have any slowdowns. I am not the kind of person who upgrades every year - or not even every 2 years - so when I read comments like this I am kind of shocked at what people consider "borderline usable". So, if iOS 11 is similar to iOS 10 (looks like it after the latest betas) I won't hesitate to upgrade to take advantage of the new features and I will probably wait one more year before even considering upgrading to a new iPad.
P.s. Since everything is subjective, in my opinion "borderline usable" was iPhone 4 on iOS 7. Now THAT, was a nightmare to use !
"Borderline usable" on iOS 10 is absurd ! My iPad Air on iOS 10 works perfectly fine and I rarely have any slowdowns. I am not the kind of person who upgrades every year - or not even every 2 years - so when I read comments like this I am kind of shocked at what people consider "borderline usable". So, if iOS 11 is similar to iOS 10 (looks like it after the latest betas) I won't hesitate to upgrade to take advantage of the new features and I will probably wait one more year before even considering upgrading to a new iPad.
P.s. Since everything is subjective, in my opinion "borderline usable" was iPhone 4 on iOS 7. Now THAT, was a nightmare to use !