Back when over a decade ago or longer I could see this being a problem. Today my iPhone 5S does stop charging when 100%.
There are folk that are not convinced and they are forever lost.
If you really want fast charging, get with a tech friend and replace the battery with a supercab.
https://www.google.com/search?q=capacitor+as+battery+for+iphone
iPhone Suggestions
Having a quick pop up after setting an alarm allowing you to see how many hours away your alarm is set to go off from your current time
Fast charging, who really wants to wait for hours to recharge their battery, faster is better
Siri being able to learn the way you talk as far as slang/lingo or accent to better understand your needs
Being able to create ringtones, without having to pay for them or downloading an app, this can already be done for alarms why not be able to this with texts and phone calls
Battery automatically stops charging once it has reached 100%

Chowhound
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GameFAQs
GameSpot
Giant Bomb
TechRepublic