Star Trek: 11 Incredible New Technologies That Were Immediately ABANDONED
3. Firing While Cloaked
In Star Trek VI: The Undiscovered Country, a group of renegade Klingons, working alongside Starfleet and Romulan operatives to ensure the continuation of galactic hostilities, managed to overcome the problem that prevented firing while cloaked. Though the extent of Starfleet and Romulan innovation remains a mystery, those serving under General Chang must have taken this particular secret to their graves.
Firing while cloaked is arguably the greatest military development of the 23rd Century, finally allowing fleets of secret ships to be built and setting the scene for a grand conquest of the Alpha and Beta Quadrants. However, rather than usher in a new era of glory for the Empire, some idiot in Chang's crew didn't save the files to the cloud and the technology is never seen again.
While the technology existing on one ship alone certainly adds stakes and tension, it doesn't make an awful lot of sense. In truth, it gave the Klingons too much of an edge in galactic affairs so when Chang's Bird-Of-Prey exploded (for the first time) it took with it all of the secrets of this outstanding discovery, presumably to the rest of the Empire's chagrain.