Actually, the 'concept' you are talking about is the creation of MUSIC, not the tool used to do it with. You can be creative on ANY keyboard, if you are creative.
The thing is, you doom the open keyboard arranger to hell, suggesting that it is BETTER sold as a blank slate than voiced and styled as professionally as a closed one is. Truth is, these things would dominate the market completely if sold already as well set up as a closed arranger. Everybody wants what they can do... but they want it AS WELL as what the closed arranger does. And setting up an open one that way would in no way whatsoever cripple it for someone that DOES want to start from scratch themselves.
But it sure as hell cripples it for the vast majority that DON'T. Once again, being on an arranger forum, I am strictly talking about the open keyboard as an arranger. If you want to use one as a WS, no problem. But, be aware that even the BEST WS's come with just as much high quality CONTENT as a TOTL arranger, albeit in slightly different format. And, if the entire 'concept' of a WS involved ONLY creating original music,. you wouldn't think they NEEDED to include that, would you?

Sorry, but the minute you say 'arranger', and to be honest, WS too, you need to acknowledge that content is an important part of the whole package. And one that is badly ignored right now. If you want a healthier 'open keyboard' segment, and have it be more than just a niche product (the more they sell, the faster innovation will become), rather than excusing it's lack of content as some kind of weird BENEFIT, you should jump on it as much as most of us already have.
Adding pro quality content to an open arranger certainly won't make it WORSE...
