ie 'this is as good as it gets' stage.
Yip, that is what I think.
Big, precocious youngsters tend to stop developing early and they are at their full potential at a very young age.
Norman Whiteside is one example.
Joe Royle never improved much, if any, after his 21st birthday.
Andy Carroll would be another.
You find injuries tend to affect them more.......certainly in the case of those three.....as the frame settles down.
I have this feeling Rom is at his physical peak now but hasn't the wit to realise it himself nor the advisers to tell him to shut up and make the most of the fantastic opportunity he has right now rather than keep looking for jam tomorrow.