Even if Notre Dame doesn't land his commitment (and I think it's 50/50), I'm not really worried about TE as much as others probably are. Koyack (who has some potential) and Niklas are both only sophomores. Even Eifert has another year of eligibility (although I'd say there's a 99% chance that he goes to the NFL as a 2nd round draftee). Alex Welch is a junior with 2012, 2013, and 2014 left in terms of eligibility.
So in 2014 Koyack, Niklas, and Welch can all still be at Notre Dame.
I want Heuerman, but I don't think missing on him, or any TE for that matter, is necessarily crucial to this team. Remember when Brenneman was a "can't miss" recruit?