Goff could improve and produce less. IMO, a lot hinges on the OL... and a running game... and health... and so on...
A lot went right for Goff last season. If everything continues to go right for him, I expect he will do considerably better. But IMO there are a lot of other factors in Goff's success than Goff's improvement.
I remember last season how underwhelmed Gonzales and others covering the Rams OTA's and practices were.