Actually, my build order commonly is as follows, that I've done quite a few vanquishes in the past couple of weeks.
- Olias / MoW - AotL MM (I took out Nova on large map vanquishes, in favor of an AoE or quick recharge attack spell, except in compact areas. I also made em a protter to pre prot with. Also made em Rits to pop Recuperation in the recent Eternal Grove mission.)
- Xandra SoS Rit
- Razah SoGM Rit
- Gwen Ineptitude Mes
- Norgu Panic Mes
- Tahlkora - UA Monk (It just felt too uncomfortable to not go with at least one monk. Plus, she's purty in Primeval armor.

)
- Last hero various: I have several options, depending on if a mission needs a specific hero require, or just my own style. Dunkoro as a RoJ Smiter, a Broad Head Ranger with winter / frozen soil, depending, A merc hero Ele as an Invoke Lightning spec, the warriors as either Hundred Blades or hammer knockdown-wild blow. (The latter mainly for Shiro.) I'm also in the process of leveling a Rit, Necro and Mesmer, to add each as hero mercs soon abouts here.
I think the philosophy I settled on, is (for the most part,) numbers. Massive numbers. Armor ignoring numbers. Also, that I suck at micromanaging, as I'm a rather lazy person really.

I know I need to work at spreading out my team more for the spike boss groups. But when I get two greens from Mirror of Lyssa yesterday, things seem to be working overall.