Put the extra tools in the "footer" of the navigation sidebar

This is a great point. I agree, the tools would see to fit better with the items in the footer than the rest of the navigation bar.

I think it would be nice if it was something the site builder can decide on, so adding a configuration to allow this would be useful.

I'm going to focus on getting a 1.0.0 stable release, then I will look at this.

As this is a new feature, I'm flagging it for consideration for version 1.1.

Potentially related core issue: ✨ Allow modules to hook into top of content/footer sections of new core navigation Active

I discussed on the #admin-ui channel on Drupal Slack in this thread.

At present the Navigation do not want links added to the footer menu, and consider it a "constrained space", and I don't want to disrespect that.

I'd appreciate if anyone with interest could read the thread above and add any thoughts to this issue.