YES that would be a really cool feature. Some other stuff if there was like a limit you could fly like a certain height or you cant go really low while spectating
This is a good idea, Players when they die should be able to respawn as spectators, Invisible, That they can fly, Without the ability to chat with players and without the ability to break blocks, Like that we can spectate our friends and wait for them to finish the game and leave whenever the spectator would like to.