On another spoiler note... Brotherhood reservist will be easily as competitive as Avengers reservist... maybe moreso.
I'm especially digging:
Amelia voght since you can place her and another 2 drop on turn two, which gives infinitely superior board position in the early game.
Anne-Marie Cortez, which allows you to reveal a character card and negate the opponent's ability to play plot twists of the same cost. That could be HUGE if you reveal a low drop reservist. All two drop plot twists negated each combat turn...
And blob... holy cow... "Whenever an attacker you control causes 3 or more breakthrough while attacking a character, characters you control cannot be stunned while attacking this turn" Huge.
I haven't really had time to get through more than the brotherhood section, but I am duly impressed.. I may have to pre-order a second box when I am at compendium tomorrow!