Now that would be awesome for us end users and profitable for Rolawalk.
As a consumer I'm thinking yeah, that might be cool. As someone who's worked for a fairly large software company for 15+ years, I'm thinking it sounds like a nightmare from a development/QA/support perspective. Especially for something like the Track Lanes/Layers aspect which (I assume) is two entirely different sets of code. That kind of thing could result in so many permutations of an already large set of features, which in turn would likely result in less resources to actually develop and test said features. And I'd imagine Roland/CW has limited resources all around these days... who doesn't.
Maybe if it was a matter of your license simply enabling or disabling *existing* features, sort of like the Essentials/Studio/Producer concept, it could be feasible (development-wise). Though it still might be unweildy from a support and customer service angle - "so you have SONAR X4 and you can't see Track Lanes. Did you purchase that option? Yes, it's part of the comping module but not the extended viewing options package. Oh, you're not sure which one you have....? ".