I got the:

MGS5A - Earn 2500 points every stay, starting with 2nd stay up to 10000 pts

which seems to make sense from a marketing perspective. The majority of my stays last year were long term- Lots of nights, but only checked out once a month or so. It makes sense that they'd want me to have more higher cost stays to increase revenue.

Of course this year I've been doing 3-4 nights each week in full service properties, so I'm only so happy to oblige with this promo.