A new feature from Community-Tech that will allow layering of blocks. This was the #14 wish in the Community Wishlist Survey 2023.
Project page: https://meta.wikimedia.org/wiki/Community_Wishlist_Survey_2023/Multiblocks
Discussion: https://meta.wikimedia.org/wiki/Talk:Community_Wishlist_Survey_2023/Multiblocks
Related projects: MediaWiki-Blocks, GlobalBlocking