I've worked on something a couple of weeks back (https://compassionate-bell-62f5f1.bitballoon.com/) after the topic was discussed in the discord hub chat.
The main issue to solve is with Face It atm. As @JimWood said in discord:
I'm not sure if someone is in contact with Faceit about this, but it's something that needs to be resolved to make the whole plan work.
About my hub page itself:
It is linked to these collections for displaying the maps
Voting is done by signing in with Faceit, and when voting it checks if a user has joined a Mapcore hub
The page can use some content (text, images, structure), it's something I would like to handover to someone else or at least collaborate with someone with. For me it was just a fun experiment with the steam and faceit API's, and thus finished my personal goals for the project. That said, I'm open to work some more on it.
So if @El_Exodus @Thrik or @blackdog need anything, feel free to contact me (discord is the fastest way)