Well we know part of what they do. Still some compelling plot questions to deal with next season.finished season 2
8/10 ... felt a bit disjointed from S1 to S2 in terms of real broad view .. discovering what Lumon actually does .. why are we here? Like they changed writers after S1 but Stiller and Dan Erickson were active throughout S2 as well.
Without going into spoiler territory ... its great TV
S1 was a quest plot .. essentially an "escape room" storyline. what do we actually do here? Follow maps and clues to find the hidden treasure which answers your question.
S2 was a love story