So what we are saying here is, if anyone posts a cogent, well articulated and detailed post about anything, it MUST come from me?
You flatter me...
(even if you didn't intend to..!)
I think the point the OP is making is the INSTANT nature of arrangers. That's why we all like them so much. WS's, even long before open keyboards, have been able to make MUCH better sounding final products than arrangers do. BUT... it takes a LONG, long time, comparatively. Not all of us have that time to spare, not all of us have the skills even if we HAD the time, not all of us need the improvement that time would make over our arrangers...
There's a REASON we are all here on an arranger forum. And, as much as the open keyboard love their keyboards, when push comes to shove, pretty much ALL of them have conventional arrangers, too. And, if the truth be known, actually use these live a lot more than their open keyboards.
There's room in music for BOTH types of keyboards. My disagreement with the open community mostly comes from their hyperbole of not NEEDING closed keyboards any longer, all evidence to the contrary. It's painfully obvious that the open community does not have a TOTL arranger, yet. And that closed keyboards do not have the sound and flexibility of the open ones. But there are different times when you need these different tools. Neither can replace the other.
I use arrangers for live playing. I also use arrangers as sketch pads for studio work. But then I complete these projects with VSTi's, and WS's in addition to what sounds from my arranger survive (sometimes it's none, sometimes it's quite a few). To do the job properly, you need to use EVERYTHING. I still believe (and so far, all evidence seems to show it) that open keyboards do not yet do the jobs of their closed counterparts as well, as easily, and as quickly. They do the jobs that they are best at better than closed keyboards. But there is no outright winner, yet.
And, trust me, the day that software alone CAN do the job as well, as easily and as quickly as what I currently use, I will be buying and using it. Until then....