I've been an iPhone loyalist since the day the very first device was released. I've seen each iteration of the operating system (iOS) mature from a very limited platform to one that's immensely robust and innovative. I've also witnessed a few no-brainer features that Apple has still yet to implement, and if iOS 6 remains close to what beta 1 looks like right now, it's going to be another year or so of waiting (and hoping) for these to see the light of day.
Before you comment with "you can get that if you jailbreak," let me just say that I've been there and done that and the hassle of keeping up with jailbreaking every time an iOS update is pushed out is too annoying, especially if it takes a while for the dev team crack it.
Hopefully Apple will finally wake up and add these sorely needed yet simple tweaks to iOS 6 before it is released to the public this Fall.
Bigger Folders
I have hundreds of apps on my iPhone. With 64GB of capacity, it's pretty much begging for apps. Unfortunately, if I want to lump all my "productivity" apps or "social" apps together, I must create multiple folders since Apple only allows 12 per folder. This is an annoying feature that could very easily be fixed. How hard would it be to implement scrolling into folders? Answer: not hard at all!
More Sorting Options
This is a minor one, and something that I've never really heard a big rumble about but I believe would be extremely useful. Apple should have a sorting option that automatically arranges your iOS icons from most-to-least used. Not only would it give you a truly useful homescreen, it will also help you eliminate those apps that get tucked away and take up space that you have no use for anymore.
Simple Access to Bluetooth, WiFi and other Settings
Android has had this feature pretty much since day one; why doesn't Apple allow me the one-click ability to turn on/off Bluetooth, WiFi and other commonly toggled settings? A simple placement in the notification center or multitasking bar would be perfect and eliminate all that navigation under settings. Granted, iOS 6 has moved Bluetooth up one level, but still – give me access without having to go to the settings app.
Better Multitasking Pane
I get that Apple doesn't want people to "kill" apps they're not using, but there's no denying that it can help free up some memory, especially with some apps that require a lot. A one click "Close All" would be much simpler than having to manually "x" out of each app running in the background. Additionally, when you are in the multitasking mode, 80% of the screen above the bar is useless. Why not make the bar height three apps talland eliminate the extra swiping to get other apps? I never understood this from the beginning and it's a huge oversight that still remains.

Notification Center Tweaks
I'd love to see the stats on the number of times people miss the "x" to clear a notification. The button is so small that it often takes a couple tries to hit it. Also, why not add a "clear all" option to erase all those notifications at once? I often come back to find my phone full of tweets, alerts and other missed messages that can be easily be consumed and erased in one fell swoop, however I must clear each alert by group. It's stupid and time consuming and don't get how it was ever this way to begin with.
iTunes Match Settings
Anyone that uses iTunes Match and commutes on a subway knows that it can be a real hassle trying to scroll through music that's on your device versus what lives in the cloud. Currently, to view music locally synced, one has to go to the settings app, navigate to music settings and toggle the switch that only show downloaded music. Apple needs to put a simple toggle right within the Music app that shows local versus cloud-based files on-the-fly. Oh, and while we're talking iTunes match, can we please lift that 25k song limit?
What are some of the no-brainer features that Apple has yet to implement in iOS that I missed? Let me know in the comments.