So, just recently picked up Sins of a Solar Empire: Rebellion, and tried out the Ascendancy mod.
Excellent work. Been a HUGE fan of Thrawn's Revenge for Empire At War, and Ascendancy is just as good.
Anyway, only been playing briefly, but I've had a thought about the Dreadnought.
Strike Cruisers have the "Denting Strike" research, which makes them much more valuable as a component of a fleet (and boy oh boy, do you need to build big fleets in this!) In the Thrawn Trilogy, much was made of Dreadnoughts using their ion cannons. In Dark Force Rising, when Bel Iblis is helping Han and Lando escape New Cov, the Dreadnoughts bombard an ISD with ion cannon fire, keeping it off-balance long enough for them to escape. Later, Garm uses them to try and capture some of Thrawn's cloaked asteroids, but to no avail.
Anyway, what about a research like "Denting Strike," except debuffing attack instead of damage, representing Dreadnought ion cannon fire knocking offensive systems offline temporarily?