Ask HN: What is useful to know about a company and position before interviewing?

Salary, Role and responsibilities, Trajectory for the company, Perks, Culture, Leadership vision, Special projects, Team composition, Ability to do a 'reverse interview' - meet with your new team and interview them.

Just to name a few.

What separates someone from being 'good' in this role to 'great' ?

Comp range, role responsibility, team size, company trajectory and reputation. Other stuff would leave for due diligence if interview gets serious.