I'd love to be able to define a small set of wp-cli commands that appear in a context menu or elsewhere in the UI.
99% of my wp-cli usage is entering "wp migratedb profile 1" to fetch the latest changes from the server, and reducing that to a single click would be fantastic.
I also imagine there are some common commands like "update plugins" and "regenerate thumbnails" that could be set as default entries and would be useful for people who don't currently use wp-cli.