Simple Chain Abstraction implementation wallet-side. 
Dapps should never implement CA SDKs directly. As far as the Dapp is concerned, it should just send a request of what it wants to do, and the wallet should figure out how to do it.
It can be by bridging from other chains, sourcing from different  accounts, or onramping. 
This makes even more sense with EIP-5792

Web Team Lead & Research Team Lead @reown

Founder @payflow /payflow payflow.me /crimea 🇺🇦

From the dapp, you wouldn’t be concerned about that. You just care about your intent being completed. 
You would specify your ordering, or priority wallet side in settings.

curious how user specifies the priority of tokens to be swapped from?) I guess you will pass a list right?