I think BM >>> MM. Curious why you think MM would outshine BM.

Can't a Vengeance DH also give the magic debuff? I don't believe the spell damage debuff is that worthwhile. Like, yes, it's good, obviously, but in the grand scheme of things, it's a small benefit compared to having a better character in a lot or having less types of armor. It would be really cool if you could play this team with a holy priest and/or swap the hunter with another clothie. I know mages are kinda hard to box, but just my own 2 cents.

I wish you luck with this. I definitely want to hear some updates once you get this team rolling. I would like to get a mixed caster team going but it will probably be the second content patch before I get around to it.