Might be worth setting up Axis or icici . As you probably are aware you can have as many accounts as you want ..

Axis used to allow kyc using self certified documents ..I did mine pre covid using self certified ones and they arranged for DHL to pick it up.. Tried to set up an account for the missus last week but they need the documents notarized .

So maybe we will set it up on our next visit to India.
Their UPI system seems okay as per a friend

The only glitch I've had with axis is that the NRO account debit card did not support contactless transactions ( called WiFi in India) even though it had a contactless symbol .. I have to use the PIN every time

I thought it was an issue with my card but my relationship manager told me that it was an issue with the system ..This was around2 years ago .. I dont know if they have fixed it now

The axis bank app also requires you to have the SIM of your registered phone number inside the phone if you want to sue the app .. And they are also fussy about it being in sim slot 1..