I'm looking to build a dedicated boss killer for my group that includes an aurabot and an iceshot deadeye for clear. The two things I'm looking for are:

• Something with excellent bossing capabilities. I don't care about clear at all.
• Something tanky, preferably something that can face tank anything.

I'm leaning toward a max block build for the second criteria, since that's a ton of mitigation and it'll let me learn boss mechanics without getting punished hard for missing a single attack. A max block gladiator seems to be the best max block build. But I'm not sure about single target bossing skills. If I can avoid cyclone (including cyclone-based builds like HoA), I'd prefer that as well. That said, I see a few options here and there: Bleed EQ, Double Strike, Reave, Lacerate, etc.

Any advice would be appreciated!