Allow the BackgroundAudioPlayer to play tracks from the MediaLibrary. Or allow applications that implement the XNA MediaPlayer class to run in the background.

I don't want to have to memorize or write down a phone number before going to the dial pad. I want to copy it from a site and paste it into the dial pad. It would be nice if when someone texts me a number, I could paste the entire text message into the dial pad and a regular expression would pick out the phone number portion.

Allow users to set a bacground color or theme for start screen like Windows 8

Currently, serialization and deserialization of the CookieContainer doesn't work. The documentation says to use the CookieContainer if one needs to save off HttpOnly cookies. It seems that saving the CookieContainer isn't possible.

"If the server sends HTTPOnly cookies, you should create a System.Net.CookieContainer on the request to hold the cookies, although you will not see or be able to access the cookies that are stored in the container."

It would be good to have a Video Chooser Task that works in the same way as the PhotoChooserTask. The reason for this is for users to be able to do things like apply filters, add audio tracks, crop out a relevant section, etc... of a recorded video and saving it back to the MediaLibrary. I assume saving to the MediaLibrary will be part of the AR functionality in mango anyway?

it would be helpfull to have a passwordBox like control which supports Number only keyboard. Numeric only passwords makes more sense for Smartphone world as its fast, convenient and easy to type.

Want to have a feature. Allows software products from the same Publisher, accessing IsolatedStorage. And can communicate with each other. Start each other (optional), which can be expanded larger developers ideas and more powerful than iOS and Android system.

This can save storage space, unified data storage location.

Or another form. Developers can provide their main program with subroutine. Subroutines can be run separately. Main program can manage/run program. In this way, developers can provide independent extension to process the data.

Wish to consider this kind of system design.

PS: above I use the online translation feature.

Microsoft should expose GPS based API's that can trigger after say 5 min or 10 min departure from a specific GPS location. This would be very usefull in apps in customizing the reminders.

Wifi Connectivity API Handel's:
1. Getting List of Available WiFi Connections and Details.
2. Search for new WiFi Device.
3. Sending A File to Selected WiFi Device.
4. Sending A File through application to Application using WiFi connection.

It would be really a good idea if we could use the FindAllPeersAsync method( or something similar) to get a list of all discoverable devices within wireless range.

it would be nice to have a search engine so we can use keywords to find different items in our smartphone. i had that option in my nokia n97 and used it a lot.

An option to choose between vibrate on keypress or sound on keypress
I love to type with vibrating keypress

If my users want to move through a song a little bit, there is no way to do that, as MediaPlayer.PlayPosition is read only! Should be able to set it.

There are some built-in URI schemes for launching System Settings on Windows Phone 8, for example, ms-settings-wifi: or ms-settings-lock:, but it's too little of them. Users ask me to make shortcuts to Battery Saver or NFC (Tap+Send) settings in my app, and I can't because of lack of these URIs. So please add more URI schemes to access more System Settings pages.

It would be extremely helpful if the emulator could use webcams as camera emulation. Otherwise AR scenarios are hard to develop without a range of devices. It has become even more needed with the addition of WXGA and the different scalings in WP8.

Currently it's not possoble to make connections behind proxy servers that require authentication.
This very much limits business type apps that can use resources or run apps while connected to a work network.

It's only currently possible via the web browser.