Yes I've seen the T9 and Titan videos. Yes they're awesome.

I think MRD might actually be optimal in some of the turns, between Keen Flurry, Perfect Dodge, Goad, and the rampant CDs actually allowing higher DPS than WAR (if you can use B4B). T10 I could see happening pretty well, would just need some extra love during add phase. T11, not so much, between Resonances and actually having to hold aggro on one of the adds. T12, I think MRD may be perfect for the job for groups pushing 3 Bennu anymore, between Perfect Dodge and the minimal amounts of times MRD actually has to tank (would literally only have to tank the boss once, Bennu wouldn't kill a MRD with proper Virus/Adlo/CDs).

T13 probably more possible than you'd expect. Wyvern really doesn't hit that hard, especially if you can Perfect Dodge the big hit. Akh Morns might require Apocatastasis for Akh 3 if getting 4 Akhs and using the standard Big > Holm > Big > HG rotation I think most groups use by now.

Has any high-end group actually tried MRD and have experiences? Please no theory fighters.