TE Tyler Warren as Saints 1st pick?

Why would the Saints use a first round pick on a TE when there are glaring needs at Guard, DT, DE, LB and S?
Because if you have "that guy" available, they will probably elevate the team more than filling any specific need. General vibe that I'm getting is he's good, but not 1st round good, so probably not. But I think it's a good to keep an eye out for people who could be that esp. if they're projected out the top 10.