Jenkins configuration as code. It's hard to configure without going to all the files and options. You have several things to take care of: server config files, plugins, credentials, projects, etc. Going through xml files is not fun. Also, having predetermine pipeline plugin configuration based on runner types would be nice. For example, if k8s I would expect k8s plugin + credentials + organization plugin. In many cases, the only thing I want is a pipeline which I can deliver code. Do something with jenkins declarative and get rid of groovy script. The latter makes a mess in your files, the former is very limited. At the end you have to write groovy if you want things more bespoken. It would be nice to just use any language in a container as drone does for your plugins.