There are a lot of sounds in this one that don't seem to work right at first. These instruments depend on the mod wheel, and adjusting that controller can give some results that are more interesting than just filter sweeps.
The last time they had a big sale, they had extra discounts for you to complete your collection of sounds for any of their instruments. Of course the problem with completing your collection is that you won't be able to use their Christmas present of one free library.
Upgrade to NI Strum Acoustic 2.
Other than that not much. Maybe whatever EZ Keys library or MIDI pack they have on sale.
Other than those small things this will probably be the least expensive BF season for me in years.