Interesting enough that is something that was tried in Warlords of Draenor for Fishing, there were small, regular and Enormous variants of the fish and depended on skill level which version you got, with the Enormous ones only being available near max skill.
That system didn’t carry over to Legion though, Fishing went back to using just one size of fish, and not having to gut stacks of them into pieces for cooking etc too.
2 Likes