At the very least they could add the option to hold-to-fire. There's no reason to have to deal with all the rapid clicking and oversampling issues the system is fraught with at the moment.
Wouldn't mind seeing the movement speed buffed to be somewhere between tactical cruisers and the Vindicta, either.
Pair that with removing any penalties to maneuvering for Siege Mode modules and the line would start to take shape as the mobile, hard-hitting long-range platform it ought to be. Should be nightmare fuel for other artillery cruisers and corvettes.
Bonus points if they give the main battery an innate stasis effect, though that might be just a touch too much.