It would seem that way. Let's hope he doesn't do what Greg Kovacs and keep pushing the gear and calories in unnecessarily. As you said, it's just a matter of gradually refining his conditioning; not much more can be done, if anything.
Oil, spray tan, posing, etc, those small details will help. Not much more.
For whatever reason, Kai Greene and Big Ramy didn't seem to understand that they were maxed out and focused on size rather than conditioning, as if more muscle was a necessity for them to place higher. I think when bodybuilders are maxed out, they need people around them who simply explain to them that it's only a matter of gradual refinements in conditioning.
Even the conditioning is basically maxed out. There can only be tiny improvements there. People talk about guys like Ramy or Dallas being "off" or not conditioned enough, but these guys are basically as lean as Heath, whatever difference there is has to do with how the skin "sits" on the body genetically. That and tiny differences in hydration levels.
Of course many fans will talk about Dallas improving his back or whatever, how he should bring it up through specialized training. But they are delusional and haven't observed pros attempting to change their symmetry and balance. No one at this level brings anything up except through the use of site injections of whatever.
If he can keep adding and bring up pecs delts and the lats I think he can make top 3 at the O. A has a big career ahead of him.
He wont change his proportions. He's deadlifting 845 for reps or some shit, what more can he do?
Heath can't bring his pecs into proportion, nor his width. All that can be done is site injections which he is doing, as we saw in the delts at the O. Same with Dallas.