I prefer to offload the work of world-building to the players whenever possible, and would like to add a carrot to incentivize proactivity on their part. Does this seem like it might work?
I Forgot to Mention…
When you attempt to solve a problem by taking advantage of an interesting new addition to the established fiction, expound upon it and Roll + Fx. On a hit, gain +1 Fx. *On a 10+, that’s fascinating! You successfully solve the problem. *On 7-9, it’s a bit more complicated. The GM will tell you how complicated. *On a miss, there’s some fundamental misunderstanding that actually makes the problem worse.
If your Fx is higher than 3, gain +1 XP and reset your Fx to 1.