I strongly agree with pretty much everything Bazza said. This is from the perspective of a player who mains Dessies, Dreads, and TACs, with moderate Arty and 'Vette experience. I don't prefer to use 'Vettes, but have spent enough time in them to fully understand their strengths and weaknesses, and have little problem killing them in any of my other classes, sometimes even Arty.
I think they're in a good place right now, but I'd like to see some other ships be able to horn in on their niche a bit. For instance, more offensive TACs like the Harwich, but with some range or something. I also see a lot of Arty-dominated battles in Veteran, and for me the only real counter I have in my fleet for good Arty is Dread nukes, forcing them to brawl one of my Dessies, or more Arty. I'd like to see more interesting choices in counter play in the future, as 'Vettes often fail to be a hard counter to Arty when the Arty are set up and used correctly.