As a programmer working in Roblox Studio, I almost never use the selection / pointer tools. I press the shortcut key to toggle them off as soon as studio loads. After starting and ending a test session (F5) studio force selects the tool again, sometimes causing me to accidentally move models and parts around when all I want to do is fly around with the camera.
If this behavior could be improved and studio would not force select the selection tool when I have had it disabled before starting the play session these accidents could be completely avoided.