I think it would be great to expand upon other members within the Scions of the Seventh Dawn even if it's through optional side quests. It's understandable that major Scions such as Y'shtola, Thancred, Urianger, Alphinaud, Alisaie, and even Tataru will always get a lot of screen time but the organization is a bit bigger than just them.
It doesn't have to be extremely major like Y'shtola's and Thancred's involvement in Shadowbringers but instead something along the lines of Arenvald's involvement in the Post-Stormblood main scenario quests. Arenvald went from a background character to someone that we eventually got to know.
From what I gathered in the lore book, here is a list of non-major living members still with the organization that could maybe get a plot promotion:
- Hoary Boulder
- Coultenet Dailebaure
- Alianne Vellegrance
- Riol Forrest
- Slafswys Helbloefwyn
- Dariustel Sompt
- V'mah Tia
- Ocher Boulder
- Aenor Cockburne
- Ephemie Giphelmont
- Aergmhus Saehstymmysn
Arenvald Lentinus used to be part of this list but the developers were able to pull him out and expand on his background and identity. F'lhaminn Qesh, while still playing a somewhat minor role, is also a character whose background and identity we are all already familiar with since it ties in with Minfillia which is why I didn't list her.
Personally, I'd like to see something done with Hoary Boulder since he's always at the center whenever they gather around the background characters. More story on Riol would also be interesting since he was the guy that tipped us off about the Crystal Braves. Lastly, I think Dariustel would be interesting since all Duskwights that play a somewhat bigger role (if any) are always villainous, from what I recall.
I think this would help flesh out the organization more as a whole and give it more identity than just the small circle of friends that we are familiar with. What do you guys think?