It would be great that if there was an option that when you imported a project; and both projects have the same exact token names, but with different values, if you could override the imported components with values from the project that it got imported to.
I think this one can be confusing sometimes, because, the normal expectation of importing a project is that you get access to the components from that project with the UI defined by them, allowing to be customized though variants, but I see the point that you are trying to bring, if you consider the theming as something separate from the project, you can have more reusable components that way.
ya, it reminds me of what the pasting is like when you do the Figma plugin; that it asks you if you want to use the Plasmic defaults; possibly something similiar asking if you want to use the current project’s defaults