For Backdrop, we should build the functionality of simplified_menu_admin module into core. It combines the list of links with the title and description fields, so we can reduce the menu administration forms from 2 into one.
Here's how it would look (with the already ported simplified_menu_admin module):
Here's how the respective admin page looks like in vanilla D8 after https://www.drupal.org/node/663946 got merged:
Recent comments
When there are thousands of links to be listed, it is better to split the map. Otherwise, hreflang is a good choice.
xmlsitemap module generates wrong links for languages
I don't fully understand why someone would need multiple sitemaps for different languages, but you certainly know better. Good luck!
xmlsitemap module generates wrong links for languages
Easy xml sitemap doesnt seem to offer multiple sitemaps for different languages, otherwise it seems a good solution for a single sitemap but then it doesnt make sense to exclude languages at all...
xmlsitemap module generates wrong links for languages