The only problem I have with Interdiction is that there is no consequence for failure.
A failed Interdict should result in some sort of damage to the Interdictor, a sort of feedback effect.
In my more GMish moments, I think that should be an insta-kill because the power plant detonates, but dumping the ship out of SC without the intended target would not be an unreasonable result since you are trying to use your SC as an anchor against theirs. I would also want a percentage of damage, but, whether and how much is debatable.