@finn thank you for that feedback! Control over the URL of a blog tag listing page would go well with some other changes my team would like to make to listing pages (mainly letting users set a meta description or page title for those tag listing pages or author pages, for example). I’ll make note of your point about the URL as well.
Customization of the URL aside, I am surprised to hear that special characters in URLs is not good SEO practice - I did consult with the internal SEO team here at HubSpot about this a while ago and was told at the time that special characters are actually nice to have. This was in the context of pages and blog posts, where users can edit those special characters and replace them with more ‘simple’ Latin-alphabet characters, so to your point you don’t currently have that option with tags. I’ll revisit this and see what I can find, but in any case do agree that customization of the tag page URLs would be ideal 