^I think the fact they're doing a special packaging, have this "extravagant" team of composers and this is her first 3A in 7 years is confirmation enough that they're doing something special for the actual single this time. How it'll all turn out is another thing altogether.
I love Mega-mix's, I tend to like fanmade ones the best though but it would still be a cool idea. How would they chose which songs to use though? She has 50 singles... even if you did like 30 sec of each song.... lol yeah. XD