I was hoping some more folk might voice opinions.
I think a measured approach to setting up categories is a good idea eg not to rush in with too many. I also agree that Richard’s suggestions covered the ground pretty well.
I agree too with Jon in feeling that separate Activator and Chaser categories may not be necessary as many of us do both, and most topics are probably of some interest to both.
Richard’s link to the cycling Reflector was also interesting, it has clearly been well thought out. From browsing that, it seemed to me that SOTA might include a more diverse range of activities (including cycling, of course) but to set up categories and sub categories for all of them could lead to an unhelpful fragmentation.
I’d be inclined to go with the headline categories more or less as suggested, and then add categories or sub categories over time, as necessary.
I think this new Reflector is a very positive step, btw, and thank you to all involved :o)