Not to beat a dead horse, but let’s say the phone does get damaged while jail broken, with no way to revert to stock official iOS non-jail broken. Apple won’t repair your device, because you have voided your warranty.
LOL if it's bricked they'll just swap it out. If (AAPL) can tell it's been jailbroken then the end user can revert it to stock. If (the end user) cannot in such condition, (IMHO) they have no business jailbreaking in the first place!
Back OT...
Dark mode isn't always about pure black. I've tried it and it's not ideal but in many cases still preferable to say the blinding all white we can't get rid of now either!
I'd be happy with a theme-able interface or at least have the ability to set object color.
Remember when Office 2013 came out and you had blinding white and less blinding grey white for the only choices? Horrible.
Bring back glass elements. I miss how older OS/OSX looked. There was never a performance issue then (at least on the OSX side) and certainly today there wouldn't be a performance issue on modern hardware.