So, essentially, if it has all the features of the destination arranger, it should do the translation, shouldn't it?
I guess the thing that changes the most between arrangers is the CV's, right? Different patterns for different chord types... If vArranger is already dealing with this, it should be able to do a 'save as', shouldn't it?
I think you might gain a LOT more sales of the software if it not only operated as a standalone style 'player', but also did conversions too. Be great to use it on a laptop to audition a bunch of styles, but for those that would rather use their own arranger to play the styles, it would then be even GREATER if, once you found a style you liked in vArranger, it then did the conversion.
Win/win..!
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An arranger is just a tool. What matters is what you build with it..!