What I'm looking for is the same data as what you'd get on the clients page, like status (online or offline), Description, OS, Connected to, Usage, IP, MAC, First seen, Last seen, Manufacturer are the ones we look at most often. The API only seems to show me a subset of that info, and only if I query each access point individually. I want to do this for 4-5 sites (and possibly more down the road), and from what I've gathered that would mean at least 100 API calls every time I get stats.
Doing it as a manual download process is far from ideal, as the reason I'm doing this in the first place is to merge with other data sources, and automating that makes the whole thing worthwhile.