The current LFG has many issues:
To many categories and subcategories
Dead categories (completely empty or 1-2 posts)
Maybe hard to find something for new players
In this image https://ibb.co/2KjbBwJ I propose a simple UI as this:
General: Core Tyria, World Bosses, Festivals, PvP and WvW
Expansions: all of them listed in order
Living World: all of them listed in order
Instanced Content: all of them in order
I know that here will be an argument that it will be hard to combine all posts from all maps of an Expansion or Living World Season, but what if you let the post owners to include some tags, like map names itself? Image here: https://ibb.co/Ykd4Yty