Brian Rafalski wasn't "great in his own zone either", but I don't recall anybody complaining about his 40-50 pts., transition game, and powerplay ability. Not every defenseman is a two way superstar. Doesn't mean they can't be exceptionally valuable to the right club.
Also, Yandle's "defensive shortcomings" are overblown. He's not bad defensively, none of Phoenix's defensemen are. Tippet is a defense first coach, and he plays a defensive system. Yandle's as good or better defensively than probably three or four of our defensemen. It's just a label he got suck with as a 20 year old that dummies keep repeating ad nauseam to justify not wanting him. Is he a shutdown guy or two way superstar? No. Know who else isn't? Kronwall. Smith. Karlsson. Shattenkirk. Wisniewski. Subban. Faulk. Ehrhoff. Burns. Edler. etc. etc. etc. Yet all of them are good players and none of them are liabilities. Neither is Yandle.
I'm sick of this "he's not great in his own zone" argument. Not every player on a team needs to excel two ways. Also, the argument is usually only used to malign players we're already convinced we don't like, considering more players than not do not excel at the two way game.