Okay, serious suggestion on how to handle clan stuff. I'm not good at articulating things sometimes, so let me know if this makes sense or not:
Ratticus and others have been posting for a good while now that a clan purge was coming a week after 2.1, so at this point I feel that it's more than fair for that to actually occur. Make a definitive post in this thread and in the Clan board that anyone who doesn't verify by say this coming Monday (9/8/14) or so will get booted. Individual exceptions can maybe be made for people we know are active but just away at the moment etc, but I don't know how many (if any) of those are out there. We then purge inactive people on Monday (or whenever). It's probably close either way, but I have a feeling we could probably squeeze most or all of the people who actually want into the clan in.
Moving forward: as we know the primary issue is that neither in-game or on bnet can you really track user activity. In-game just shows last login date, and bnet I think shows an update date of the last time they logged in or maybe even when someone last looked at that profile. In any case it's not really accurate, and has been the main stumbling block here. What we can do and I am willing to do is expand a bit on the community spreadsheet Raticus has built. It already has bnet profile links (which I figured I'd have to get manually, so that's great), and what I would propose is myself or Raticus or whoever would start monitoring bnet profiles on a 30 day window for paragon level activity to gauge if people are playing or not. People would get one 30 day grace period with no activity before being then purged on the next "cycle". For paragon level activity I'd suggest something very minimal like maybe 3-5 paragon levels, since even at very high levels that is very minimal effort and time.
Example:
-Let's say clan purge occurs 9/8.
-10/1 I would go in and add or build a sheet listing out everyone's softcore and hardcore paragon levels on that date. Given that the purge and additions just occurred, I wouldn't suggest doing any purging on this cycle, but people who have had no activity since joining would get a flag. That's probably highly unlikely on this first pass however.
-11/1 I would go in, and anyone who was flagged on the 10/1 pass and still didn't have whatever minimal activity decided upon (the 3-5 para levels etc) would be purged. At this point realistically we would probably start to see inactivity between 10/1 and 11/1 on some folks, who would then get flagged.
-12/1 folks flagged on the 11/1 pass with still no minimal activity get purged.
I could also throw in achievement score on there as well, but I'm not sure if there's a way to see that on bnet? Also instead of 30 day windows we could potentially do purges midmonth instead so you'd have a grace period of 45 days of inactivity instead of 60, etc. I think realistically even the folks that are very active in the clan but sometimes take longer breaks very rarely if ever have gone more than 45-60 days without logging in or playing at all. There's probably only a few edge cases like that I can even think of where people have gone in extremely hard for periods of time then come back after a long hiatus, so if nothing else we could also maybe entertain a rule where if your paragon level is super high (like 500+, of which I think we only have a few in the clan) you maybe get a longer or indefinite grace period?
tl;dr I'm willing to manually check people's paragon levels as a sign of activity every 30 days or whatever.