So, I actually think that this "up to 8 free" is one of VMP's biggest grifts ever and I'll explain myself.
Even a day after they announced this, the number of "Join With This Album" choices beyond the last couple of months was already starting to thin out; I'm guessing when they email ....everyone at the same time....a coupon for their free records, after two weeks of pumping this promotion, that everyone will find the same usual suspects that have been lingering in swaps for years to be their "free" albums.
And I put "free" in airquotes because they really aren't, are they? They are albums used to bring your invested cost per record down- so you would have to find up to 8 LP's you would want to pay $21 for normally, or up to $28 on the six month.
I would imagine they would drag this out until summer when they have enough new ROTMs to fill the coffers again for people renewing/signing up.
But to my jaded, cynical eyes this looks like someone cooked up a way to both look apologetic for the price bump and clear out dead af inventory in one subscription bump scheme.