(edited by Malthurius.6870)
Suggestions: Block and Retaliation
Except that you can have much more retaliation uptime than aegis, and you can apply it after aegis ends.
It’s not a large anti-synergy, it’s only about 200-300 damage at most being lost per aegis while retaliation is up; but I’d want retaliation to apply while other sources of block are up as well: Shield of Courage, Shelter… this would also benefit warrior and shield stance.