I was thinking about what I would want from an Eizouken Season 2. And I think it can be summed up with 'going from a startup to a going concern'.

New season, new year of highschool

the old student council president and secretary are gone

but new members of the student council replace them, as they do to every year the seniors graduate

but this is the first year that the Eizouken's recruiting new members

and I think they should just get flooded with people who want to join them, and suddenly face the question of 'are we only in this for ourselves, or do we want to build something that can outlast us.'

I mean it's a manga so we know what a season 2 would entail,
which is whatever comes next in the manga

well yes

Season 3: how to commit tax fraud

I was actually thinking that a character that would be good would be someone who admires Kanamori's ruthlessness but who is less good at it. And would absolutely commit tax fraud.