Mac users have to face the fact that the program will probably always be limited in features. Peter has added some things in the past few years from the Windows version but I believe the architecture is significantly different enough that it makes little financial sense to devote time to overhauling things.

The "make your own" UserTracks feature cannot be implemented in the current Mac version because we can't record an audio track. We can't take advantage of Sampletank HQ sounds inside BIAB because there is no plug-in architecture for the Mac. This may change but I don't expect anything until I see it.

You would be better off installing Boot Camp or a virtual machine like Parallels to run the Windows version if there are enough features you cannot live without.