Awakening had staff wielding Falcon Knights too. I'd hoped Sumia would fill that role when she came in but sadly no. A Sakura alt would be good in the normal pool though.
Maybe as a legendary hero.
Not this month though, September's one is confirmed to be blue.
We're getting a new colorless legendary hero this October though!!
Pokemon GO
Fire Emblem Heroes
Fate Grand Order
Dragonball Legends
Dragalia Lost
IV Calc
Heroes