Quote Originally Posted by Shurrikhan View Post
There's no need in that fight to Interject any of them save certain AoEs and Stoneskin, though. Pre-HW mob casts can't turn mid-cast; they can therefore be interrupted by just... walking through them before the cast snapshots. On that note, though, Ice Spikes on the 2nd boss can and should be interrupted, and certain interrupts on the first boss can save casters from having to move.
There's no need to, but you can and it was a good enough example to use.

Quote Originally Posted by Rhais View Post
I probably did a poor job of communicating my thought, but the Haukke manor boss was not really what I had in mind. I was more thinking of sequential casts that could be interrupted until one resolved or it reached the last in the sequence. Like off the top off my head maybe one could be a raidwide and another a double tb, and at the moment I can't think of anything else other than those two generic ideas. I was also thinking it would be better to have this option while simultaneously dealing with differing sets of mechanics throughout the encounter. The thought was to have it used to possibly adjust what the party has to deal with based on what else is going on and what resources may be available, rather than it just be something to press when you see a prompt. Something that might require a bit of coordination with the rest of the party as well.
I believe I didn't communicate well enough with my response. What I was trying to say is, Haukke Manor's final boss has multiple attacks you can interrupt. You can ignore them of course as the person I previously quoted points out. Using that same template we can, as per your example take that boss and make a new one that has multiple interrupts and you can pick and choose which one to interrupt.

In the Haukke Manor example I prefer to interrupt her other cast over the Fire II spell she uses since my party members tend to move out of it regardless. Or if I feel I can interject fast enough to interrupt her butler to make the fight go faster at the end I do that instead.

Basically, I agree with you and would like more bosses for us to interject multiple casts and also choose which mechanic we'd like to deal with.