Option to install dev plugins
this can roll in with the install_plugins option, something like this:
install_dev_plugins:
# - debug-bar # https://wordpress.org/plugins/debug-bar/
# - query-monitor # https://wordpress.org/plugins/query-monitor/
You might want to consider adding in WP Optimize. If you have a lot of transient caching it can clear everything with a click of a button. I have it on every site I work with and highly recommend it in any toolset.
Thanks for the pointer. That one probably isn't necessary for this use-case, but if you have other dev-centric tools, specifically the kind which help improve a site prior to deploying, let me know.
Monkeyman Rewrite Analyzer is a great one to check your url rewrites. That could be deployment centric.
But if you're going to use Debug Bar then the Debug Bar Console is a must.
Another plugin I've gotten a lot of use out of in the last year:
Creates a meta-box with meta-data information of a post for all post types. Information with meta key, meta value and its var_dump