The Defiant and E-E had QTs from the get-go, so the "didn't want to worry the neighbours" argument falls flat on its face. You claim that Voyager could "supply it on demand" and yet the most powerful ship in the fleet had sod-all. Conclusion - they had problems developing it for fleet-wide use.Thorin wrote:Irrelevant whether it was developed. Voyager could supply it on demand. The most plausable explanation is that ships were either due refits (the E-E was refitted at the end of Nemesis, it's possible it was getting it at that time), or that they weren't installed during peacetime so that anything like an arms race happened, or so that other AQ powers didn't see the Feds getting all powerful and ganging together.
Actually the previous Klingon battleship - the Vor'cha - was only a couple of decades old, and the previous one had been through at least two major refits despite the basic hull shape remaining the same.They could create it. It's not unsupported - Voyager did it. I'm sure many other ships could, and even if they couldn't, Voyager would just be a breeding machine. There is no indication that a Negh'var isn't the most powerful ship the Klingons have 25 years in the future. In fact, before the Neghvar was created, I seem to remember the Klingons kept their previous most powerful ship for a hundred years or some other large figure.
Also the Galaxy in All Good Things was much more than a match for two Neghvars - a ship which was due for retirement!