It's a good question @Matthew - unfortunately some PRs that are too difficult to review in reasonable time still fall through the cracks. We do have a list but if used responsibly you can actually ping the team

@umbraco/core-collaborators-team

to ask about a status. Of course if that happens a lot it will become useless, but let's see if that helps for now! In a few weeks we'll open up applications to the team as well, since one of them moved to a different team and the other got hired by HQ, it's kind of decimated the team! 😅