Please do not increase too much on the missiles because it is good rp and cool coop when snubs for a shield and CD Novas and other missiles.
It should be possible (and it is not easy to select them and hit, etc.).
I'd suggest: 2 TCD hits on a Cruiser missile, 3 on a BS?
In general, I agree that these large missiles should receive a buff. I have always loved missile duels in large caps.
One thing has to be avoided: the "insta snub" option sucks.
Also burst damage cannot be big because if it is, dual-missiling a friendly GB to kill the snub swarm around it becomes a good tactic again.