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:

https://askubuntu.com/questions/960074/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]**

https://askubuntu.com/questions/959865/in-ubuntu-17-10-how-do-you-get-your-workspaces-on-both-monitors **[Reopened]**

https://askubuntu.com/questions/963444/17-10-file-explorer-app-files-3-26-0-fails-to-recognize-mouse-middle-button-to-l (probably still valid, issue with csd) **[Reopened]**

https://askubuntu.com/questions/964062/ubuntu-17-10-two-monitors-different-resolution-on-dell-xps-13-from-2015

https://askubuntu.com/questions/960704/how-to-disable-the-on-screen-keyboard-in-17-10 **[Reopened]**

People with reopen vote privilege please have a look at them.

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Also there were some which got deleted. So I have no idea how "reopen-worthy" they are:

https://askubuntu.com/questions/959128/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