I don't want to draft a TE based on his blocking ability. For some reason, I like the idea of the 5 guys who's sole purpose is to block to be able to do it efficiently enough to not need a blocking TE.
Does blocking ability help? Sure, but I'm not looking for a TE who can be the 6th OL. I want a TE who can catch the ball and be just good enough to get in the way when called upon. If Dallas is going to go for a TE, they better get one who's best attributes are catching the ball and moving the sticks.