Have you been trying to convert your 1.8 command blocks into 1.9 command blocks?
Have you been to get the conditional to work, but can't get the command block to face you, but you don't want to break the command block because there might be stuff around it that might be affected, such as signs?
I'm running into that right now trying to convert Kit Spleef into 1.9.
So I'm suggesting a button inside the command block UI that is labeled "Face Me"
When pressed, the command block rotates to face the player that clicked the button, without breaking any signs that might be attached to it.
I think this will be a small useful addition for command blockers, and I don't think it's too complicated.
What do you think? Tell me if I should change anything!