Two engines(10), two nacelles(free), 4+2 tubes(13.5), and 7 phasers(28) get us to 107 first round costs vs 91.25 for the Excaliburs.
An 2+RFL and 2 aft is 21, bringing us to 114.5. Now we need torpedo boat speed just in case, so three engines. 119.4. Hey, 4x nacelles gets us .5 Max Warp. ??? for costs, but I'd bet at least 15 for a extra pair. Maybe 130-135. That's how you get 50% more expensive then an Excalibur and tactically the only functional difference is more HP.
Devil, gold plating is thy name. We need a big boat that can bite, not an attempt at an Excelsior 50 years early.
I'm not sure I agree. Our shields are a noted weakness, especially given the Klingons' superior weaponry. If it matched the Excaliburs' armaments, it still has, what, ~3x the shield strength? That alone makes it an absolute
terror. It's not much of a stretch to give it 2 forward RFLs, and at least 2 aft singles, or maybe an aft RFL, plus some extra phaser emitters for better coverage, and a third thruster or whatever to give it superb agility.
Agility, durability and firepower have positive synergy with each other, raise one and the whole ship becomes scarier. Raising the firepower by a notch and the shield strength by 2-3 notches, and this is a whole new animal for the Klingons, Gorn, Tholians or Romulans to contend with. And have we ever regretted making our ships deadlier? Has it ever backfired on us, spending that extra $$$? At the very least, a few of these on our more troubled borders will seriously deter anyone, as they may come to expect every Federation ship to have stupid amounts of heavy shielding, decent phaser coverage, the ability to fire withering barrages of photon torpedoes as an entree and ballet dance with grace while doing it.
If all else fails, it'd be a useful exercise if the costs are too high to justify its combat capabilities in the post-mortem, help us make better future decisions.
I for one think I'll vote for 2 fore RFLs, 1 aft RFL, decent phaser spread, 3 impulse drives and quad nacelles. Go for Gold. If it can cover more territory, it can fill in for more ships and be disproportionately effective given its cost. If it can destroy most anything that threatens it without dying or suffering heavy damage, our costs go down, our enemy loses hulls and crews while we do not.