Bitbucket PR Reviewer Groups
Adding the same five reviewers to every PR gets old fast. Bitbucket has no concept of reviewer groups, so I built a small Chrome extension that does.
How it works
A content script runs on bitbucket.org/* PR creation pages, finds the reviewer field, and renders the configured group buttons next to it.
It injects buttons like UI Team or QA above the reviewer selector on Bitbucket’s PR creation page. Click one, and every member of that group is added as a reviewer in one go. Each button programmatically opens the reviewer dropdown and selects the matching usernames — the same flow you’d run by hand, just batched.
Configuring groups
Groups are configured on the extension’s options page.

Each group has a name (what shows up on the button) and a list of Bitbucket usernames. Add as many groups as you need — UI Team, QA, Backend, whatever maps to how your team actually reviews.
Groups and members live in chrome.storage, so they sync across devices once you’re signed into Chrome.
Source
urre/Bitbucket-PR-Reviewer-Groups. MIT licensed.
Load unpacked from chrome://extensions/ to try it.