Would it be possible to stream to other devices, like android tablets and use a controller to play (connected to the tablet or to the PC)? It would be great to play certain games on a tablet or your
own phone and it would be pretty possible with most androids having Wifi N.

steam link for windows
https://steamcommunity.com/app/353380/discussions/8/3105764348181505385/

also have apps for linux, android, apple, macos, tv and more

stem link forum
https://steamcommunity.com/app/353380/discussions/

pick the subforum for the client device type
android/apple/tv/pi/linux/windows

http://www.aliexpress.com/item/Sell-Mini-PC-with-both-Android-Windows-8-system/2044898752.html
you are not the first

Would definitely like to be able to play PC games streamed to my Android tablet combined with a paired bluetooth gamepad.

Would be nice if they made an xbox/playstation app along with android/iOS. Cover the full spectrum of devices.

in-home streaming closed beta has started, there shall soon be little reason to use limelight unless you have an android.

depends on the tv

check the steam link subforum for the tv brand
apple/android/samsung
https://steamcommunity.com/app/353380/discussions/

Same issue here. It seems like a bug in the latest Android app, which updated overnight. My hardware steam link is ok on 2 PCs, but both PCs have the error above when any of 4 android devices connect

could eventually make something like that for Android though, so getting Android TV could be a good idea.