Our site Tour features an example question to show how the Stack Exchange system works. Currently, it's set to the default post about preventing unicorns from eating daisies (spoiler: not a real Q&A). Moderators have the power to select an actual question from the site to be featured on the Tour. But ... there is a problem! But ... there is a solution!
We already discussed this four years ago, and there are still zero questions on the site that match the usual criteria for being choosable for the Tour ("the posts have to be short, with at least two short answers (<=400 chars), shouldn't have any crazy formatting, and should be open" - where "crazy formatting" include blockquotes, headers, and lists). On this site at least, most good answers are long and many of them include some kind of formatting. So we've been stuck with unicorns and daisies since 2017.
I've now been informed by a Stack Exchange CM that it's possible for them to manually override any or all restrictions, so we can technically put any Q&A we want on the Tour page. Among the standard restrictions, I think we can keep "should be open" (duh, we don't want to promote off-topic stuff there), and "at least two [...] answers" (this helps with the part of the Tour page about accepted answers), and the unstated-on-meta criterion of having at least one comment on at least one of the answers (again, helps with part of the Tour page). If necessary, we can remove either the length or formatting restrictions.
There's a Data.SE query which finds all possible questions satisfying the usual criteria (currently none). We can modify this query to remove any of the restrictions until we have enough questions to make a decent selection. For example, here's a revision which removes the no-blockquote restriction (all other disallowed formatting types are still disallowed) and the length limit on answers (length limit on question is still there), which gives 26 questions. If you think a different set of restrictions should be lifted/kept, feel free to fiddle around further with the original query to change it. Whatever list we come up with, in the end we'll need to choose a particularly exemplary Q&A set to be displayed on our Tour page.