What do you want to see in iOS 7?
I think ios just needs some minor up tweaks for now. This has already started with the new music and App Store. If you notice the bottom bar on this (old way)
And the one (new way)
It's very subtle yet much cleaner looking. Just applying this style across all apps and in the sdk is a start. I would also say that changing some of the theming such as light brown leather, can be updated (I like the idea of it as it adds more flavor but some of the themes like that in Game Center and find my friends as well as the calendar and contacts on ipad, can use better themes such as dark, more elegant leather with thin stitching, more vibrant colors in the calendar, and something more digital for the Game Center. I also think for those people that don't like the themes, they should be able to turn them off. (I would rather that then them be taken away entirely.
Apps need more connection with each other as well as the ability to be picked as a default. If apple could allow more access of iCloud or maybe a user folder system or something, that might allow apps to work together better.
I think that gestures like those on the iPad would be awesome on the iPhone. Swipe up from bottom to get to app switcher. Also, maybe make the button on new phones sensitive to touch so if I swipe left across it, I can go to my last used app, and if I swipe right across it I can go to my last used app on the right. Webos did great with gestures and apple could learn from some of that. I would just like to see some way other than multi-tapping a button, to do things.
Siri even smarter
Siri is getting better, but I would like her to become smarter
I don't think ios will ever get widgets and I am ok with that. I actually like the idea of the notification widgets because I don't have to leave an app to check the weather or post a FB status. However it would be nice to have just a clean desktop with maybe a couple favorite apps and then an app drawer for apps less commonly used. Also folder limits need to be higher.
Photos. Sub-folder structure and icloud syncing.
It would be awesome to sort photos better by having more sub folder structure. I would also like to see photos sync better. Photo stream is fine, but if I make an album on my ipad with photos, will that album transfer over? No, I will have to make it again on my ipad (unless I am missing something) also I wish that face detection and photos could work together to group people photos together kinda like it used to, and also put those photos in contacts. Would also like to see photos from other sources like Facebook, Flickr and others.
Complete redesign with more integration with social networks, logs, photos, Game Center stats and games, and more.
That's about what I would want.