A question I've been curious in. I know you could change the element your Heroic Spirit has, but has there been a time where an elemental team is built around them or are they fit for any element? Currently, my main account is trying to main a fire team (since I have Fafnir) and I'm aiming for Arthur for an aggressive team.

My alt. account (for now) has Sol, Cronos, and Bryn. Which HS should I aim for in this team? Currently, I'm going for Siegfried.