I have never been a fan of left handed starting pitchers. Now if you have a guy who has sick stuff, and happens to be a lefty (Cliff Lee, CC Sabathia, Chris Sale for a few examples) that's one thing, but to insist on having a starter that will most likely give in to the splits on any given night makes no sense. The majority of MLB hitters bat right-handed and have higher splits across the board facing LHP.
No disrespect to Drew, but he does not have sick stuff. Book is still out on Ray, but I'm leaning towards average there as well.
Now I'm not saying Smyly should not be a starter, or Ray or anyone else for that matter, but if the reasoning for having a guy in the rotation is "DD insists on having a lefty in the rotation" then that's just dumb.
And just because nobody kicked that dead horse today; if we gave up Fister a full 2 years early because we needed a lefty starter in our rotation just for giggles, someone in the front office needs a lobotomy.