Verified answer

Are you in this game for battling competitively, or just to show off to people? If you're competitive, replace Dialga with Hippowdon. Hippowdon has good defenses and decent Attack. It can serve as a Tank and an annoyer. Dialga is considered an "Uber", and is not allowed in normal competitive play. Hippowdon is just Overused, and is allowed in competitive play.

If you're playing just for friendly matches or to show off your team in game, replace either Heatran (preferred) or Infernape with Hippowdon. Right now, you have nothing to protect yourself against a Ground-type. What if your opponent has a Hippowdon, and all you have is Heatran? One Earthquake by Hippowdon and you're dead, due to the 4x weakness. Hippowdon can at least take a few hits and dish them back at. It's far superior to Heatran, especially when you have no Water/Grass Pokemon on your team.

no because it super effective to water and ground type moves.I suggest that you keep your team the way it is

i agree with the above statement