This feature very important for every streamer earning from Twitch.

Logon 2FA Requirement do not enough for who got hacked by silent.
And too many streamer don't check email.

In case my friend (twitch affiliate) got hacked.
It changed payout information without email notification(don't know reason).
And got her earn to hacker paypal account.
Region support can't help or slow progress, suggest to contact HQ Twitch.
Too many step progress to resolve this case and unsure it resolve.
Streamer have concern can got hack again if change new password and change payout back.
Investigated don't know why got hacked, That pc don't install any suspicious software or chrome extension.

I think this feature too important. "Password authentication or 2FA when who need to change his Payout Information".

Second Suggest, Twitch should sent email notification before payout someone about 5-7 days.
because streamer can break or call support if payout information is incorrect before money gone.