Yes… It's effective but ugly.
So now i place one torch in the middle. It's certainly not the most effective way to do it, but it's better looking… Or also, i place torches in corner, but again it's not super effective. I'd like to place torch on the celling, but the game can't handle that i guess.
What about light “inside” the wall ? Or luminescent walls ? Or a creature walking around the room you place it, making light ?