RE bundles as products
While I don't think it's totally necessary to offer bundles to tempt people to spend more money on more devices, some of which they might not need, it occurred to me that if the Props shop was updated to support bundling RE's together under one price, someone could develop a set of RE's that were designed to go together, taking advantage of Reason's modularity.
I really hope that devs bring back half-rack devices someday, to go with this idea. I really enjoy hooking those little guys together.
Oh and couple this with polyphonic CV and people could make their own synths, mix and match features as they see fit. This would be like heaven for me.