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 dock in 17.10 and later? (checked, still doesn't work in 17.10, so the question seems valid) [Reopened]
In Ubuntu 17.10, how do you get your workspaces on both monitors? [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]
Ubuntu 17.10 two monitors different resolution on Dell XPS 13 from 2015 [Reopened]
How to disable the on screen keyboard in 17.10 [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]
https://askubuntu.com/questions/960919/is-there-a-way-to-get-removable-drives-icons-in-ubuntu-dock
https://askubuntu.com/questions/962372/how-to-turn-off-shortcuts-in-new-ubuntu-dock
https://askubuntu.com/questions/962611/how-to-remove-gnome-from-ubuntu-17-10
https://askubuntu.com/questions/962779/ubuntu-17-10-how-to-re-position-windows-from-shell