Creating a standalone feature
You may want to use the template just to host your own features without any of the existing ones. The template offers a lot of value in managing the assets around it to make the plugin a lot easier to consume.
Standardizing how we build plugins has a lot of benefits too, by following the template structure and standardizing the approach, it reduces the overhead for development teams to utilize the sample code and accelerates their ability to harden it for their own needs.
It also makes reuse of the serverless work that often gets re-written over and over again between plugins, minimizing overhead.