Question: Why can't you as a rogue pop feint and soak every single one? 50% reduction onto that is huge with a bubble ( without?) you should have enough. If you want to be a badass and are proficient enough with sub I would suggest you go sub, despite not being able to backstab you would have a change from 60% uptime of 50% damage reduction that increases to 80% damage reduction with 90% uptime through enveloping shadows.
The uptime on it allows you to pop it with the glyph every cooldown and you'll find that you take a great deal less damage than anyone in the fight. For the most part, random heals would keep you alive.