What monthly challenges would you love to see on tonebase clarinet?

We’re now almost at the end of our second monthly challenge on tonebase clarinet, and I’ve tried two very different approaches to these challenges, and loved seeing your participation in both of them.
This week on the forum I’d love to know what challenges you’d love to see appearing in the future - are there specific things you’d love to spend a month working on? Would you like to see more open-ended challenges?
And if you haven’t participated in a challenge yet: what would tempt you to try one?