Granitehewer wrote:But having read Deeps' ideas, i think that its pretty well conceived, there is a logical progression with the attack cruisers occupying the old battlecruiser niche and the negh'vars being produced en masse to fulfill the role of attack cruiser against some of the newer federation designs, (i was going to say that in 'Endgame' and 'All Good Things' we see multiple negh'vars, but two piffling ships is hardly an example of soviet mass production so ignore my contagious fannon and stupidity).
Not on their own, but consider the situations they were involved in. AGT (assuming there was time-travel involved rather than just a Q simulation) involved a lone medical ship trespassing in Klingon space - not the sort of threat you'd send a battleship to sort out. It
is, however, the sort of threat that would be dealt with by a routine boarder patrol. Say, a couple of cruisers.
"Endgame" involved ships operated by a House, not the KDF, and it's unlikely that a House would be able to deploy battleships on a regular basis - note that Duras, one of the most powerful individuals in the Empire, showed up to present his case to become Chancellor in a B'rel.
These two incidents suggest to me that by the early 25th century the Negh'var has fallen into the cruser bracket, and been replaced by a larger, unseen, type as th Empire's premier warship.
Although what about the role of the cruiser birds of prey?
Unknown. The fact that they seemed to have fallen out of favour by the time of DS9 suggests that they were not a success. Perhaps they were intended to replace the K't'inga in the cruiser bracket, but problems were encoutered with the design in long-term service, and they were retired as the Negh'vars were introduced and Vor'chas became more commonplace.
Also although they're produced in the squillions, surely with new designs by the major powers, the birds of prey will severely need upgrading or replacing at some juncture......
The design's probably getting towards the stage where it can't be upgraded any further, but for most of its life it seems to have been regarded as a simple, solid design, that can quite easilly accomodate technological improvements as they've come along. It's noticeable that they've become more vulnerable as technology's progressed - look at the single shot required to destroy the Duras sisters' BoP compared with five needed to take down Chang's.