Remove the 500 item limit in sitemap.xml
In SharePoint 2016 there's a scheduled job that auto-generates a sitemap (sitemap.xml -> sitemap0.xml and sitemap_mobile0.xml) which should be an index of all the pages/content in your site (very useful on public facing sites and for submitting to Google and Bing).
However, it turns out there's a 500 item limit on this. MS obviously thought no one would ever have more than 500 items on a public facing website...
Please remove this limit, or at least have it configurable.
Holger Lutz commented
You just have to raise the MaxRowLimit on the SSA level to at least 3750 to get it working without a limit:
$ssa = Get-SPEnterpriseSearchServiceApplication
$ssa.MaxRowLimit = 3750