Well I just read the topic by mazzle about this and there was alot of discussion about 'selling the code'. This can be worked around rather easily. By supporting the free version still, the compilation can be kept there. This meaning all the addons used. While on the subscribed site Mazzle can release purely and only, his/her work. This is basicly using a 'cut and override' work around.
So really, you're just paying Mazzle for access to Mazzle's 'upgraded' code. Sorta made me think of Mazzle calling it 'MazzleUI Extension'.
