Control the SharePoint site template selections to be shown
I would request to controlling function to show/hide preferred templates in the Template Selection, which shows the available templates only and hide undesirable ones via SharePoint Online admin center.
Because, when the site administrator creates a site through SharePoint Online admin center, the administrator selects < Select template later… > in the Custom tab, so the administrator selects a template after site creation, however there are some templates that we do not let them use.
Dave Gerrard commented
For organisations that might have multiple site designs that provision granular functionality e.g. add finance team to a project Team, adding Everyone as read. We want users to be able to see the bigger picture templates like 'Create project site' but might want more granular site designs to be admin only. The current implementation means that end users are going to see every site design and that is going to confuse them.