For DK+Rets, I have my castsequence set up in ISBoxer.

Every down press cycles through my 3 important abilities on CD: Hammer, Judgement, and Holy Wrath; while on every release, it tries to use Crusader strike. I have a seperate key to do the same thing but to utilize Divine storm instead of CS.

Using Power Auras I have every ret get a large translucent icon appear on their screens that I have no trouble seeing out of the corner of my eye, at which point I'll use TV if no healing is needed.

Art of War procs are even easier. I have Power auras put 1,2,3, or 4 icons on my screen to indicate how many Rets have the proc. My exorcism key is set in ISBoxer to jump at the same time I press it, which is usually every time its available on only one toon, since it's the second hardest hitting ability. Rets without Art of War will not cast Exorcism because they will be jumping.

Basically its a 1 button DPS spam with an extra button for TV and another for Exorcism+jump.