also you should think about people who bought this script and the addons and the apps, and even contributed alot to the development if the script, alot of money and time has been invested in it, so i believe its only fair for you to come up with a good option for them, unlike new customer you ld have. personally i got the script more than 2 years ago and addons etc too, just been following along havent started anything with it ever since, i was just about to start when i got the notice regarding your new path of sass.
(2)now secondly, for ur customers in countries that are not able to pay as your payment gateway may not cover their region or due to some other international payment issue, and whom had already bought ur scripts and etc, and have decided to join the ur new sass pathway, what is your plan for them? are they to just hold on with their business which they have been running well earlier?