As discussed in https://discuss.python.org/t/improve-communication-with-contributors-on-the-issue-tracker-and-prs-language-summit-follow-up/, I suggest we remove the "invalid" label which is not very useful (just close the issue) and can come across as harsh.

I also suggest to add a "valid" label with which a triager or core dev can signal that they "acknowledge" the issue (the bug is indeed a bug, the feature should be implemented, etc) and are likely to help reviewing patches for it.