I decided to give it a test run.  Visually this ship is stunning, as always with your work, DJ.  The hardpointing still has some work to be done though.
The first thing I noticed before installing was that the quantum torpedo launcher uses the "SovQuantum.py" torpedo, but no such projectile was included in the download.  I used "Dur_QuantumPulse.py" as a substitute for testing purposes, since it's a fairly standard script.  Regarding the quantum's, I noticed you're using one pulse launcher instead of four like how CG had his.  I admit I used this set up myself for sometime but abandoned it when I realized Advanced Power Control can make the single launcher start unloading quantum's at an almost God-like rate in some circumstances.  Going to a system similar to how CG has it set up will avoid this completely, but in the end however you want to do the quantum set up is ultimately your call.  

I would definitely bump up the torpedo reload time for the photons, I was able to keep a stream of constant torpedo fire on an enemy.  Balance wise this presents some problems because with weaker ships like the Cardassian's you can just keep the Galor or Keldon in front of you and blast torpedoes at it until it explodes, since the Sovereign's shield's can take the punishment.  Against larger ships like a Warbird or Negh'var the balance is better, but the Sovereign can still get a lot of torpedoes out before having to rotate shields.
Phaser arcs seems fine, but the strength seemed a tad too weak, but only a minor adjustment upwards seems necessary - I'd say no more than 200-300 max should do it.  Shields feel okay for my install.
My last gripe is with the nav lights on the top of the nacelles, they look a little too big in proportion to the nacelles.  Might I suggest making them a hair or two smaller?
I'm sorry if it seems I just dumped a lot on you at once  

 , but despite all that's above, these are pretty much just minor touch-ups that could be done before final release.  Overall in its current condition it's still a great ship to have, and I'm glad I got to try it out.  
