I was keeping a list of questions which got closed as off-topic as they were about 17.10 for past few weeks. Now as 17.10 is released, I think at least some of the questions have the potential to be reopened. Here are some:
How do I enable 'minimize on click' on Ubuntu 17.10? (checked, still doesn't work in 17.10, so the question seems valid) [Reopened]
17.10 file explorer app Files 3.26.0 fails to recognize mouse middle button to lower window (probably still valid, issue with csd) [Reopened]
People with reopen vote privilege please have a look at them.
Also there were some which got deleted. So I have no idea how "reopen-worthy" they are:
How to find what is using a shortcut? [Reopened]