I tell you a change I would like to see (Actually two changes). One I submitted to apple many years ago, the other I just submitted recently.
1. Allow developers to select certain colors for the notification dots on apps. For example a weather app could use a RED dot for warnings, a YELLOW dot for watches, or maybe a BLUE dot for informative statements, public alerts etc. You could also have the same thing for todo apps. For example red overdue, yellow, near due, green everything is current. Same thing for calendar, etc.
2. Photo/Camera app. I think the camera app should have some implementation of a toggle to define whether the image you are going to take will be for WORK or PERSONAL use. So many people these days have a work and personal phone that is the same phone. I get so tired of pictures I take for work going into my personal camera roll. I think if the toggle was added to the camera (And it would keep the last setting used) then it could put the images as they are taken in the appropriate section of the photos app. The way I would prefer it to be implemented would be when the Photos app is first launched you see a WORK folder and a PERSONAL folder. Inside each of those folders they have their own camera roll, their own default albums like people, places, etc. Then you could easily find pictures you need from work and use those filters to find what your looking for, and you could still do the same for home. And since the camera app keeps whatever setting you select until you change it people that only have a personal phone and do nothing from work it would stay set to PERSONAL by default. I think this would be a good way to keep your work separate from your home life. You don't even have to look at work images or ever even see them when your in your PERSONAL directory of the photos app.
EDIT: By the way if someone knows of a good general purpose camera app on the app store that does not use apples default camera roll to store images I would like to know so I can use that as a workaround option for point #2 above. I haven't been able to find one that does it that way yet.