Mack Hollins is 30 years old and has been in the league for 7 years already. In those 7 years, his career high in receiving yards is 690. The rest of those years he's failed to have more than 251 receiving yards and now you think he could suddenly be an upgrade to Gabe?
It seems like Shakir and/or Kincaid are going to need monster years for this offense to be one of the league's best. I'm skeptical right now.