Vision: Delegate Fees and Deposits to Another User

[shawntabrizi]

Not sure if the title here is the best, but the general idea is that we should figure out a way to support delegating certain fees to different user accounts.

Specifically, when I am initiating a multisig or proxy transaction, sometimes I will need to fund that account in order to make it usable. For example, any transaction that would take a deposit from the calling account requires me to put some funds into the proxy account in order for that call to succeed.

In reality, what I would prefer is to actually just spend funds out of the original dispatcher, and have the proxy simply be a variant of the identity.

This may require a pretty significant overhaul of some of our pallets and storage in terms of tracking the source of deposits to be a different account than the one that started the call. Or by creating some abstraction where any funds of the calling user seem to exist in the proxy accounts and so forth.

In the short term, an idea might be proxy_with_funding and multisig_with_funding where a user can initiate a call with some funding, the call would first transfer any funds, then execute the operation, and at the end, transfer any funds back.

[xlc]

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