How can the Cleveland Browns become a competitive team?

We need a strong pass rusher at DE to start, a veteran WR to mentor our very your receiving corps, and another strong RB to take the load off of Hillis. I think the Browns are getting better, but I think they lack the conditioning required to play a full 4 quarters. I was pissed off so many times in the last 6 minutes of their games this year, I contemplated driving up there and giving tthem a how to and a what for