So I have a T5 Grenada now, and the interesting thing about it (in comparison to the Onager) is it's actual double shot, rather than a single shot that shoots twice. Overall I like it better (as is the general consensus, I have noticed) for taking out moving targets- the problem comes when I want to shoot both shots fast. I find that, against dreadnoughts, the Grenada's DPS is a little lacking from the Onager because you have to click twice. I will often have to click three times because of the slight cooldown between shots. I'm not sure if I am just not using the ship correctly, but the slight extention between shots seems to bring the DPS down because of the long reload for the primary weapon.
My immediate thought on this is to give the Grenada the same treatment as the Oberon Artilleries, where you click and hold to empty the magazine (though it would only work for the two shots, you would have to re-click after reloading). Of course, a lot of people might find it hard to fire a single shot because you might have to click fast, but I feel as though this is worth looking into, as I sometimes feel as though my T4 Onager is better than my T5 in some ways. Just my opinion, any thoughts?