A passing resemblance to the plot of The Changeling with a dash of The Doomsday Machine, probably doesn't help. Decker is actually the son of the late Commodore Decker from that very episode.
In some ways it's The Phantom Menace of Trek. No fan has a neutral opinion of it. But, it also made the smaller budgeted sequels such as TWOK possible, as the sets were already up. Every series from TNG to Voyager used those redressed sets. It was a sad day when they were finally torn down.