Launching a warp disrupt probe will give you aggression and prevent you from docking or jumping.I'm still thinking through the implications of this, but there's no question that this casual little change is going to massively alter the dynamics of how Interdictors are used and flown. Double-bubble ships will be most affected, particularly double-bubble ships that are used to aggressively block both sides of a gate.
A very common tactic when a fight happens on a gate (and most do) is for the double-bubble ship to bubble in the aggressed ships, then quickly jump through the gate and bubble the other side as well to slow down escapes in that direction. Another common tactic when the fleet is to "jump into" a held stargate is for the bubbler to drop one bubble, then jump in, decloak with the fleet, and drop the second. Both of these tactics will now be effectively unusable by a single dictor. To implement them will now require two dictors: one to drop the bubble on either side of the gate.
There are going to be a lot of unintended escapes over the next few weeks as FCs and dictor pilots get used to this. FCs will order their dictor pilots to "jump through and catch them" and have to be reminded that the dictor can't, if it's already dropped a bubble. There will also probably be a lot more unintended dictor deaths as their pilots forget that they are now aggressed when a bubble is dropped no matter what they do. There's also going to be guys like me needlessly attempting to warp in bubbles to aggress dictors; that tactic isn't needed any more, either.
On the flip-side, though, there will be fewer dropped bubbles in general, notably fewer fail bubbles. Right now, dropping a bubble is an almost casual move by a lot of poor dictor pilots. They'll do it instinctively even if there's little chance of that bubble catching anything. Since even a completely unused bubble will cause aggression, there will be fewer of these unthinking drops happening.
Overall, though, I have to say that I think this is a poor move on CCP's part. It's also a puzzling move: I can't see where this change is coming from or why. What problem is being solved by completely rewiring how an entire ship class has to be flown now? Is there something that's been going on with dictors that I'm not aware of? Discuss.