Is there any possibility of making worldwide metal festivals archive on Metallum?
So that people can search for festivals just like they do with the bands and labels.
Years active, posters, logo, lineup history and other useful historical facts, trivia etc.

It's a long-term project and it requires a lot of work (although, site users may be a reliable source of information, potentially with an "add a festival" option), but it can be a very useful contribution to the worldwide metal community.

It's been suggested a number of times before and nope, there are no plans to add this gargantuan endeavour to our already many tasks.

That's a new archive in itself. Would be awesome, please start it.