My 2015 iPad Pro shouldn't still be in the rotation. It's stuck on iPadOS 16.7, it charges over Lightning, and its 32GB of storage was cramped by 2018 standards. I use it almost every day anyway, and the apps are the reason. Finding ones that still install is the hard part now. Amazon locked the Alexa app behind iOS 17 for new downloads. Google Home followed, and Google Photos now wants iOS 18. The App Store shrinks a little for old iPads every year.