I love my dreadnought, it my be getting left behind in the current power creep of new ships but it's still the one I play the most.
I know I could max my dips, tanking etc on other ships but I play for fun and that little bit extra oomph just doesn't of set the joy I get from flying my dread, now on to the topic.
I don't like the idea of saucer sep for the dread or the idea of a shot gun lance, what I feel would be better is a redesigned saucer, trimmed on the sides a bit more angular, same for the hull.
The reasoning for this is Starfleet has a limited number of these powerful ships but they are getting outdated against new designs. How best to make the best out of what they got, instead of a complete resign of the main weapon why not make it more useful. Adding amour and decreasing its mass would make sense. On a warship why have such a large saucer designed for families etc, trim the edges to reduce weight and inertia, add extra RCS at the same time.
If I had any art skills I would draw an idea but I dont.
The up side of this, give the ship an improved turn rate and low inertia, as an extra bonus increase the Tac levels by one level each.