What do you want in a companion site/app

I’m currently planning on building a small companion site/app for Crimson Desert to help me explore Pywel, and keeping track of stuff (seems like a game that will be very good at distracting us with everything you can do)

I was planning on building it for my own use, but maybe someone else here would use something like this?

What features would you actually use and what would you like to see?

Current ideas:
• Interactive map (bosses, resources, hidden quests)
• To do list - jot down things you want to do within a gaming session and cross off!
• Sketch/drodling section - freeform draw/sketching for puzzles etc.
• Skill/build planner
• Crafting database + material lookup
• Completion tracker (100% zones, achievements)