If I add the Taxonomy plugin through Essentials, I still have to add a spring bean configuration file (according to https://www.onehippo.org/library/concepts/plugins/taxonomy/delivery-tier.html ):
After adding and configuring the Taxonomy plugin using the setup application, you will need to tell Spring to create a TaxonomyManager component. An example of a configuration can be found in the taxonomy-demo: taxonomy.xml
Copy this file into src/main/resources/META-INF/hst-assembly/overrides in your project's site module.
Could the Essentials plugin add this file already, taking a manual step out of the installation process?
Edit: see Bert's comment, it's not required so make it an option in the Essentials configuration tool.