The director is just confusing me now "i'm searching for the best person and I won't interfere" Wan Jia appears and exploits bugs. He fixes the bugs. And now Director is ruining his own game by interfering with it.
I don't think it's a case of nobody thought about it and more if you don't have some card that let's you map the maze and an easy combo for wrecking walls (like just charging straight through them) wrecking walls just costs too much time and effort for potentially no gain. Also you'd be helping...