I'm finding useful multi-step routes on Rango (e.g. Arbitrum One to BTC, ending with a Thorchain Streaming swap) at better rates than if I manually execute these individual steps in our app. Maybe it would be interesting to integrate their API and aggregate these routes at some point?

They offer monetization options: they charge 15bps currently and allow integrations to add a custom fee on top of transactions (for some chains through as an instant settlement, and for others through a monthly settlement):

Lastly they also support/aggregate Jupiter on Solana so it might match another goal we currenty have.