Hi Lee, I don't know your age however I will admit to being 57 years vintage. Having been involved with the Organ trade for most and I mean almost all of my life I have seen many ideas come and go,Hammond had the mad idea of making a model T series that was called portable/transportable the TTR 101 and this still took2 fit men at min to move and set for a gig( don't forget the Leslie speaker that never did come in a reducable package and they were BL--dy heavy!!)
In about 1981/82 I was working for my local music shop selling American organs (Hammond,Lowery etc) Euro models ie:- GEM,Eminent,Wersi Plus the Japanise Yamaha, Technics(then called National) and Casio Keyboards
It was at this time Casio came up with (if I remember correctly) System 2000 or something close. This package offered two lengths of keyboards,No of keyboards 1 or 2,2 types of modules for styles,3 or 4 sound units,this left you to set up your own sound system. Although very basic and not even MIDI !!! it was a very tiny light coming down the great tunnel of Life we all travel along. May I say many of us did not even think the product would even make the shops but here in England we SOLD 2!!!!!,so the idea is not so new but now the computer age is well and truly here it now makes it more likely to happen and even take off.
Regards John.

P.S. It's taken Yamaha long enough though!!! I wonder if that was the reason Casio never challenged the big names in the organ world ???