Hi. I think it would be nice to have an official Android app in which you could :
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Check the Marketplace for content
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Use your Android device as a remote controll for your games. UE4 streams video to Android device and the device sends data to the game.
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Take a look at the latest ue4 news
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Have a special Hub, in which all the video tutorials are organised, so you could find them faster
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Browse trough Blueprints sheets, made by other developers, in search for a certain mechanic. The sheets could be exported from UE4, or recreated on the device, by linking similar tiles. ( we are interested only on how they look visually, with annotations )
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Connect with AnswerHub
I think that such an app would be pretty useful. Using this on a tablet would be nice.