Not a bad point. But he hasn't grown in the past two years, so he's maxed out in terms of how much size he can put on his frame. Conditioning is the only place he can go back to the top, but he hasn't been the most conditioned on stage in a while. This photo is probably Heath at his very best:
You're exactly right. He's maxed out. He really never had a large frame to pack on tons of muscle. It is amazing how far he was able to take it considering his frame.
I think the IFBB really sent a message choosing Rhoden over Roelly. They're going to emphasize conditioning more. If Phil can do it he can be back in the running. But with Rhoden winning it's really opened the door for others. I think everyone standing there in top five has beaten Rhoden at some open in his career. I know if I were Kai I'd definitely be thinking about getting back in the mix. He can downsize a lot and still be bigger than Rhoden. And, unlike Rhoden (arms/back) Kai has it all. Everything is maxed out.
I'm sure the powers that be see the potential of getting Kai back on stage.