Every next deal the company offers is better than the previous one. You don't get the new perks, you can't pay a bit extra to upgrade your deal, you even can't stack! Some argue that Appsumo deals have a great ROI, so nobody should complain, but:
1) many people buy deals to use them in the future, so no ROI there
2) generally, treating early adopters worse than future adopters is a bad practice in the LTD world
So, my question to AppSumo is: you usually defend the interests of Sumolings and honor any upgrades/changes your partners make in their plans/LTDs. Why do you let SerpStat treat your customers this way?