I gotta say it... Medusa's passives are insane. She has to be the best "passive" player in the game IMHO. Her yellow is insane.
I don't know if I prefer Legendary Presence to Vibranium Tech or not; they go hand in hand on a team though. Legendary Presence has the advantage of starting strong, but it goes away when you need it most (when Peggy has low health and you're trying to salvage a match), whereas Vibranium Tech is dependent on other powers fortifying tiles for you. it takes longer to get moving, but has the advantage that it makes your powers cheaper while taxing the enemy, and will run as long as Shuri is alive. Using both characters on the same team has the effect of starting good, and then finishing even better.
2* mention for Hawkeye Speed Shot
If you replaced all of 5* Wasp's abilities with only Hood's passive, I'd play her.