If a lounge pass at 40 nights isn't filling lounges, then it probably doesn't need to be moved to 70 nights.

As I said, finding hotels with a lounge is a problem.
Sure there are probably quite a few in the Far East, but a lot of my travels aren't there.
Not necessarily paying a premium just to stay at a hotel that actually has a lounge.

Got a cheap £58 HIX on Thursday that will get me my 30 nights.