Furina vs Xianyun on Melt Team

Okay, so if you're running Gaming with Citlali + Bennett on melt, would Furina or Xianyun's buffs be more beneficial if they were the fourth member? Furina would be in healer mode so she wouldn't apply hydro but still could burst. Since Gaming already depletes his own HP then heals himself, he could generate fanfare himself couldn't he? Then, Furina in damage mode wouldn't be needed.