I'm all up to pay more for a pro version !!
just so long as it's not priced like Synfire USD $954 http://www.cognitone.com/shop/index.stml

There is a pro version request here http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=327412

I think the main problem is they are flat out trying to keep up with the products they now have - band in a box, real band, power tracks and now mac band in a box let alone power tracks or real band for mac.
In the past band in a box and real band were released twice a year now with the mac version it's once at the end of the year - then they spend time fixing bugs - then move on to power tracks for April May release - then they start work on the mac version for mid year release - then fix the bugs in that - then move on to another end of year band in a box real band release.

So unless they hire more programmers there is not enough hours in the day.