Is there a limit to what can go in a Constitution?
Matthias is probably packing and missed this question :), but here’s my modest opinion: with the Edgeryders method there is always openness and particularly openness to emergence, in that you can’t know what you are going to find, and the beauty is going in wide open and allowing for surprises and novel insights. The answer to what challenges are there, citizens will be the most suited to know in a project like this which essentially legitimizes them and the contexts in which they work eg starting from the very beginning, by asking open questions like “what do you do, why do you care, what challenges are YOU experiencing?” instead of what they think should be done to tackle x,y,z in a predefined framework.
When we did Spot the Future in Georgia, Armenia, Egypt, there were some broad themes which were “predetermined” as you said, based on UNDP data, but we ended up with something different, also because the method is not based on representativity.
Maybe @ElaMi5 or someone around her can answer your question better?