The Victory needs to either be cheaper/worse than the Apocalypse to fulfil "Cheap Long Range Support", or we need to buff up its ability to focus firepower (without much increasing its off-side firepower) and make it "Heavy Focussed Long Range Support".
Cheap Long Range Support pretty much means leaving it as is, possibly with the speed reduction, and costing it in the 310-320pts range.
As for Heavy Focussed Long Range Support, the problem is that the Apocalypse is pretty much maxed out on everything, and 6L +9WB is a better focus than 7L (4 Broadside + 3 Dorsal).
Then again, if we're making the Victory into Long Range Focussed Support, what does it need prow NC/Torps for? 9 Torps are equivalent to 13.5WBe, so we could possibly cram FP12 F/L/R on the Prow, which would then go down to Av5+. The Victory would then have a focus firepower of 7L@60cm + FP12@60cm. This easily beats out the Apocalypse on focus, has roughly similar total broadside output, and minus the 6+Prow and NC. Naturally with such heavy lance firepower, it would also have to have the Apocalypse's BMs for firing over 30cm with its lances, and we still avoid people going "It has more Lances than an Apocalypse!", because actually it doesn't. (11 vs 12).
So how would this be costed? I would say that in spite of having less total firepower than an Apocalpyse, and less armour, it should actually be costed MORE, because it would get to use what it has more often. With the heaviest broadside focus in the game, it should be looking at 380-390pts, even with 5+ prow and 15cm speed. Thoughts?
As for the Firedagger, I could better comment if I knew what the shadowhunter special rules were?
As for other ships I'd like to see included, probably the Invincible Class Heavy Battlecruiser (I know it says says Fast Battleship, but Fast Battleships are actually just faster regular battleships - they don't sacrifice protection like a Battlecruiser does), although I think the profile should be revised somewhat. At the very minimum, Hits up to 12 and dorsal lances down to 3. The Broadside firepower could also go up to 15 - it's a little weak at 12. This way you get a not-quite-a-Retribution, but it has longer range and more speed, and is still a glass hammer like a heavy battlecruiser should be.