Thats some helpful feedback right there. Explain how its a detriment to gameplay and suggest alternatives, otherwise id have to disregard your point (though i doubt there was any constructive intent in the first place).
Since you got all defensive about my joke, here we go. First off, its just ugly having a goddamn mancannon on the wall. Second, gameplay wise - what does it accomplish? It looks like it just launches you back to the area you would have to come from to even get to it. Thirdly, in theme of the map, how the **** are you going to explain a ****ing MANCANNON on the wall?