perhaps an animating tile wouldn't need to be a tile, rather try that tile to be an NPC (one that doesn't interact with any player/enemy)! You won't have to make drastic changes to your map then, because NPC's are stored somewhere else.
Naturally, I dunno how many animating tiles you need in your map, but for simple moving lights on the wall, it could prove to be enough..
Naturally, I dunno how many animating tiles you need in your map, but for simple moving lights on the wall, it could prove to be enough..