to figure out patterns and warnings for encounters BW,LW and DBM log the fight with
https://github.com/BigWigsMods/Transcriptor/

All of these offer events that Transcriptor adds alongside the combat events to correlate them better and figure out if it matches.

I think you should add support for IAT on both sides like done in https://github.com/BigWigsMods/Transcriptor/blob/master/Transcriptor.lua#L1732 and related lines.
Also logging the Blizzard achievment tracking with it.
This would make it easier to see if our assumptions are correct in the future.

Yes, This sounds like a good idea/improvement and definitely something I can at hopefully before the next set of raids release.

so 10.1 is there, the raid isn't yet. Any progress on this issue @Dragnogd ? ;)

@Dragnogd The War Within is around the corner and Cata Classic is out, how about it? :)