It would be nice if Apple would give you an option of rolling back to a previous iOS version with a disclaimer about support or something. I'd be fine with that.
I would like to have the option of going back to a previous version without it nagging me there is an update and automatically downloading the update taking up space. It's my device. I should be able to choose what I want to run on it. Like a computer. If I want to run an older OS on it, I have that right.
For me and I am sure there are others, there was nothing wrong with iOS 7.1.2. It ran great for me, and to be honest, I cannot really tell a difference from iOS 8 and iOS 7, they look alike other than that annoying predictive text. Give people an option and quit forcing them to upgrade, especially with older hardware. There is nothing wrong with my iPad 2, it is mint, it flew on iOS 7, but iOS 8 on it makes it practically unusable. So now I have an iPad that I paid good money for when it was released only for it to be a paperweight now. I have a hard time justifying the cost of another iPad just because my current one is old and worked fine on an older version of iOS, there is nothing wrong with the hardware, the software they released for it is whats causing the issues.
I am all for stopping the annual updates and release a better product even if it means it takes a little while longer, and quit forcing them on us.