I'm not aware of any plans to do so, not least because while cards have overtaken Oyster for pay as you go, Oyster season tickets / travel cards still remains a

I'm not aware of any plans to do so, not least because while cards have overtaken Oyster for pay as you go, Oyster season tickets / travel cards still remains a very significant use case. As do free / discounted children Oyster cards. Neither has a credit/debit-card based viable solution at present that'd be tolerable.