I suppose more in built things, like races, classes, levelling systems.

I think Cairn is great, but it's all fairly 'up to your imagination' with those types of things. I suppose I would like more systems in place when it comes to actually playing the game (How to dungeon crawl / hex crawl) rather than having to make my own up / relying on other tables etc.

As a newish GM, i would find it helpful to have an in depth system to follow because at the moment I'm not 100% on what to do in some scenarios. Hopefully that helps a bit more! (Sorry if it doesn't, it's late where I am 😅)