@wtfrank Nice doc! That's some great value calculations. Alright lets look at the numbers:
Disrupt source is the second most expensive by a large margin. However, the value add of disrupt source is fairly low. Most of these offensive power are about projecting forward, where you're exerting control over something you normally wouldn't be able to affect. Breaking rooms is difficult, but being able to stop spawning, towers, and support all make it a lot easier. And the best part is that they can affect things deep in the enemy defenses.
Now look at disrupt source. What does it offer? If you're in range 3 of the source, you're almost certainly in range of the creep mining it. Killing that creep does the same effect in a more permanent fashion. Disrupt source isn't letting you project power in a room assault situation, and it's impact is negligible at best unless combined with a disrupt terminal.
So that leaves it mostly useful for harassment. In that case, your max level power creep is in an enemy remote mine.
I don't see how disrupt source shuts you off from using the rest of a maxed power creeps' abilities. Could you explain that a bit better?
To clarify this, I'd ask you: Which other powers can you use when not in an owned room? So in the end you have a max level PC that's not using other abilities when it's power in an enemy remote, and it's effect is the same as killing a few miners. It's underwhelming to say the least.
A maxed level operator working solely on remote harass seems like it wouldn't be particularly broken to me.