Nah, it’s like a trap to catch a rabbit. You want to get it running down a trench so you can nab it. Otherwise it’s got any and every direction to run. Judging by the film, that worked just fine. Almost everyone who dove into the trench died there.
Sure, the Rebels blew the thing up, but only because one special boy with a ghost to guide him could tap into an ancient magical power that gave him the ability to fire at just the right moment and lock onto just the right target. Not because of poor design.