It sounds like you're thinking that end devices will do the route calculations. There might be an opportunity here since we can predict all channel states (poorly) using our ML, which is better than the probabilistic pathfinding method from Rene Pickhardt (only since the ML is based off more data). Certainly we can offer the simple graph without predictions as a low cost (or potentially free) option.

We'll start with a generic pathfinding as a service which will accept inputs source, destination, amount.
These can be populated with an invoice directly or can be fuzzed with different amounts for privacy.

We'll be sending out invitations to benchmark test our service against LND's a priori pathfinding in exchange for free use of the advanced service that incorporates our predictions.

If you (or anyone) are keen to help test the PaaS, anyone can sign up at rpo.dev/pathfinding.
 https://rpo.dev/pathfinding