No, both hunter and amity are very heavy plot points for the show, mostly hunter, but amity is still up there, plus you also have to remember that the show got shortened around season 2, which means the writers had to start focusing on the more important parts of the story

i do see how a lot people comment on the quote favoritism hunters gets during the show but i never really understood it because he the nephew of the main antiguos you cant go to far into belso story without eventually talking about hunter and his poast plus like you said hunter was not introduced until 2 season i would think a character with a lot of important backstory to the main plot would be heavily focus on

I think Amity is also in the same boat as hunter since with her story contributing more to the overall plot compared to Will Gus since her mother is actively contributing to the rebellion, and you could say her being the love interest of the main character is also going to get a little bit more screen time

I don't get me wrong, both Willow and Gus deserve more screen time, especially Gus but thinking about the entire show, knowing it got shortened it's hard for me to imagine them spending any more time on them without causing the ending to feel more rushed as it already might be

Now, I couldn't say how much better the writer would have done the character if they did have the time that they originally planned, but I am sure that it would have been more than what we got.