So "Upgrading" isn´t as much an upgrade as another 12 Month of paying 180$ + 49$ total and if one payment fails for what ever reason the subscription stops beeing continuous and the "12 consecutive Month"-Payment requirement, to turn the latest maintenance into a permanet license, means that all the money is essentially wasted. Upgrading for license owners is almost as expensive as buing the software from scratch and has the risk of loosing all the payment progress!
Why did you remove the simple (and if I recall correctly, cheaper) one-click upgrade purchase for the next version. You could have just changed buying the next major version to buying maintenance for 1 year or something similar. And why is there no seperate purchase options for Source Credits?
Correct me if anything stated above is incorrect, but this looks far less customer friendly then your old system.