I don’t have a problem with sparks in close quarters or duel. I won’t deny her gun’s damage is strong and perhaps needs to be toned down. But by her self in a duel, she’s not very strong. Quick on her feet but weak, if you can adjust your aim to her speed you have no problem.
The video shows perhaps one of the best situations for the revivr, shooting unsuspecting people while teammates are in the front and fighting. If you strafe, jump and just move when you see the sparks, it becomes way harder to get hit.
Vassili would’ve been a better pick with is instant gibs. Now perhaps bring those back in a way or bring sparks down. I’m not sure about making her not able to one-hit-kill on headshot. Perhaps tweak with mid-charged headshots and fully-charged headshots. To discourage mid charged rapid fire.
Everything else about her is fine imo. Her heal is good, but sawbonez is probably better overall. Machine pistols are just worse than primary weapons, I feel her selection of sidearms (basically her primary and secondary) is fine.