While the iPad and iPhone 6 Plus now have the ability to show avatars of users in iMessage, I see no reason this can't be brought at least to the iPhone 6. The screen is plenty big enough and the usefulness of having the picture of the person there in the message is huge. Without it, all the messages start to look the same, and when carrying on two or more conversations at once it's easy to mistakenly say something to the wrong person. Not that this has ever happened to me... I'm just saying.
7. Customizable Control Center
I love Control Center. I use it almost every single day. That said, there are things in it I simply do not need or use. I'd love the ability to decide which apps can be launched from here.
8. More DND Control
Another feature I rely heavily on is Do Not Disturb. I use it at meetings and work, as well as at bedtime. It's a useful tool. However, I'd love to be able to better tune my DND settings to reflect my days and weekends. The ability to set DND times for specific days instead of just times, would go a long way. My weekends are vastly different from my weekdays.
9. Delete-able App Cache
One of my biggest annoyances is the "other" in usage stats. Also, when I check storage usage on iOS and see Twitter taking up 2GB or my wife's Facebook app taking up 3GB. That's just completely insane and uncalled for. I understand the need for cache, but right now it seems the only way to delete it is to delete the app and reinstall. Sure, some apps actually have an option in their settings built-in by 3rd parties who understand our issue. Both these solutions work, but they're a workaround. iOS 9 needs to bring the ability to manually delete this cache from any app as desired.
10. Type to Siri
Siri is one of those things I use, but not as frequent as I thought I would...however with Apple Watch I'm using it a ton more. That said, when I'm on my iPhone I'd love the ability to just simply key in my Siri request. I'm not always in a place where talking out loud is appropriate. Sometimes I just don't want to disrupt those around me. This would come in handy.
11. iCloud Drive Manager
I really like iCloud Drive. I use it instead of Dropbox or OneDrive or Google Drive. That said it could really use some help on the managing side of things. First, there should be a File Manager app...period. Many users, myself included, still like to see what all they have sitting on their "drives". I want to see the folders and hierarchy. I want to move or delete files as needed. From a single app. Speaking of deleting, Apple needs to figure out these non-removable iCloud Drive App Folders. Every app I have used with iCloud Drive, even just to test, has a folder there. All empty. Using the web app on iCloud.com I see all of them, and no matter how many times I delete them, no matter how I try (through web, Mac, iOS), they always return. Please, please fix this!
12. Better Folders