So, the Stellar buff is a 400% increase to Yae's personal damage ?
I was recently told that Yae's damage distribution is something like 80% stellar-20% Talent Electro DMG.
Then Yae's stellar-conduct DMG comes entirely from her passive.
If her talent level's only accounts for 20% it means that the stellar buff is like a 400% boost.
Now that I think about it, newer Yae owners don't need to crown her talents if it accounts for so little of her DPS.
Which makes Yae a very F2P friendly character.