For pete's sake...
Accepting 2.1% failure rate per ship per year for a
major fleet element is a terrible idea.
Once we have the Renaissance, the design should last us 50 years or so. (I for one think we should skip the Niagara and go straight for the Nebula class.) I think the ship is worth doing right.
We could also refit the Centaur. And build a ton.
The Centaur looks like it will be a fine escort for a time when the Federation produces more sr and has the doctrines to support squadrons of them working together or with some light cruisers...
Using the Centaur to do the work of light cruisers when they are over-priced for the job and our only doctrine is the lone wolf doctrine is, I feel, foolish.
What exactly are the benefits of a Connie over more Centaurs/Constellations, if we're going to be all cautious and spend another decade on the Rennie?
The main advantages:
*waaaaaaaaaaaaaaaaaay cheaper than the Centaur in cost-per-stat point, particularly in terms of sr, which is a major limiting factor.
*Each ship is tougher than both the Centaur and the Constellation (refit)
Main disadvantages:
*A bit more expensive than the Constellation (refit)
*Uses more crew
With our current lone wolf doctrine, the Connie B has an edge, since it is the design best able to perform on its own. However, once doctrines for squadrons are researched, I expect the Constellation would have an advantage, since they are cheap enough to build in large groups.
Personally, I think it is worth building as many as 6 of these given the stat line of the Cardassian ships.
And yes, they are a dead end. But they are a dead end with stats good enough that IMO each hull is likely to give us at least 30 years of good service.
In other words, who cares if it is 60 years old if it is a good response to the problems we have today?
The other option as I see it is to rush doctrinal support for squadrons and spam out cheap Constellations. One Constie may be fragile, but two Consties together would be more dangerous than a single Connie B and be competitive cost-wise.
fasquardon