You might as well drop the Dmax and play this in OU. Even so, some choices like Inteleon and Sandaconda would remain unviable. Dracovish, Rotom-W and Seismitoad are some relevant Pokemon in OU you could use instead (and at this point, Ubers as well). I recommend Seismitoad in particular, as Dracovish itself dunks on this team.