Re: I for one love this idea
Downvoted as your comment is, I agree. I've had a few times that I was looking for specific functionality and it then emerged the app I installed was an antique in IT terms and no longer worked well with the new version of iOS.
To be fair to Apple it is not hard to get such a purchase refunded, but cleaning up this mess will at least get rid of some of that rot.
That doesn't mean it applies to all apps, though. Some just work well and need no further change. I really don't see what, for instance, you can add to the Step Two 2FA software - it happens to be perfect exactly because of its simplicity.