Aight, so I found a thread that largely answered our questions and posted a follow-up of my own to get an answer on Breaker:
http://forums.jascogames.com/forums/showthread.php?2480-giving-cards-keywords&highlight=breaker
Also, here is a recent ruling on Breakers that I wasn't aware of as well, but makes total sense.
http://forums.jascogames.com/forums/showthread.php?2052-block-difficulty-vs.-Regular-difficulty/page4&highlight=breaker