I'm not trying to be the smart-ass here but it could just be a matter of tast. U can compensate for much of the 'squareness' in the B&D expansion by editing the drumsets.
also try using the drumsets as patches ran through an external EFX processor.
I don't like a lot of the samples either. I love 'm for their compatibility and roundness, not for their realism. Just listen to the 2080 performing in different surroundings.
some like it live, some like it in studio environment, some don't like it at all.