Wouldn't be great to hear that Roland eventually decided to release BK9 as an "authentic software replica" as they call their SRX cards vsts?

Sure, it is much more than a thought about such a decision, but I said it before, many years ago (actually long before I have learnt there even is such a thing like software SRXs) that whoever of the main arranger manufacturers decided to move arrangers into virtual world, they will probably achieve a re-launch of the whole concept!
With Go:Keys it looks that Roland might take some steps in that direction. Yes, this generation looks like a very shy attempt, but who knows what they might be coming up with next? Being aimed at a younger audience, modern styles with modern sounds, for today's preferences... It has all the good premises for something interesting to develop for the future.