New and interesting use cases with UPI blocks and multiple debits

Shakitkanta Das, the RBI Governor in his speech today said:

The UPI has emerged as the most popular retail payments system in India. It currently includes functionality to process payment mandates for recurring as well as single-block-and-single-debit transactions. The capabilities in UPI will be further enhanced by introducing single-block-and-multiple-debits functionality. This facility will enable a customer to block funds in his/her account for specific purposes, which can be debited whenever needed. This will significantly enhance the ease of making payments for investments in securities including through the Retail Direct platform as well as e-commerce transactions.

This could lead to a lot of interesting use cases in financial services. A few thoughts from @nithin