1. No, not at all, a glass cannon is someone who can dish out a lot of damage consistently but doesn't have much health or way to get it back. You have several ways to control and heal damage being dealt to you aside from armor. Besides if you can control those in a massive threat area(or beyond remember earth devotion) you could make it so they can't do anything to you or your party.What I meant with magic resistance is the Shieldmaster's Shield of the Heart, not the cover. And I'm planning on using the Furious counterstrike and Steely resolve, but wouldn't then my character turn into a Glass Cannon if it realied that much in using them withou armor?, pretty much made emphasis on using maneuvers and stances like thicket of blades and stuff.
Just mentioned the Ring of Evasion since Emoplato said it would help.
Oh I though the maneuver only worked on self, and just planned to get the Cleric multiclassing for countering Kiting, not that much for healing.
2. Evasion is an ability to negate area effects if you are successful on a reflex save, if it allows one(most area effects do). Dexterity is your base modifier for reflex saves.
3. No, they can work on anything it designates, mostly its yourself or an enemy. An entire discipline is actually devoted for teamwork abilities, White Raven.