Interesting! I didn't know Koinos has this model working for their coin. I'm not familiar with their ecosystem, do they also have a dual-coin system or it's only KOIN?
This is a better alternative to RC delegations which can be used for any activity instead of the specific DAPP that is doing the delegation.
That's a very good point. RC delegation is general, it can't be restricted based on use case or the application from where the transaction is being broadcasted.