Expanding dynamic shipping methods with more sources

[TresBlue]

Which component is this idea for?

Umbraco Commerce (Core)

Describe your idea

When creating shipping methods only one source can be chosen at the moment. By default this is weight or subtotal.

However, our shop has the need for a rule on both weight and subtotal. In this case, shipping is free for orders with a total weights below 30kg and a subtotal above €150.

Right now we've fixed this issue by creating a discount as follows:

Each time an order gets update we calculate the totalweight of all orderlines to match specific shipping criteria.

It would be nice to have the possibility to directly set these rules on the shipping method. This could be done by choosing multiple sources or replacing the current rates table with the one used in discounts for the most flexibility.

Looking at the docs (here) it could be possible to build this ourselves, but we've found that the documentation is kind of lacking in proper examples.

If it's too much work to rebuild the current implementation, maybe updating the docs with a more robust example (with front- and backend code) could also be considered a fix for this idea.

Context

No response