Spectator: Showing Keystones

Not sure if this is part of gameplay, since you aren't technically playing a game when spectating, but I was wondering if there was anyway to add Keystones into spectating. Like knowing what summoner spells a player has, knowing what keystone a player has is important. Say a Jax has Grasp of Undying over ThunderLord's, you know he is going for sustain over burst. Being able to see what keystones are used help judge how lanes could go prior to them starting , as well as how it will effect the game. I also think this would be nice for LCS, that way viewers know what the players are using in that game.