The paths and theme modules are really nicely separated out, and it's great to be able to include them individually, but the update methods are a little awkward, especially when working with subdirectories.

The subdir path can't be pre-assigned to any variables, as it gets reloaded part way through start-up.

config.url shouldn't change whilst the app is running, therefore config.paths.update shouldn't really be needed.

Ideally, config.theme.update shouldn't require being passed the settings object, but circular references are to be avoided.

It would be great to revisit these again in future to see how they could be improved upon.