Bacchus
You answered your own question. Easier and cheaper to sell a single Manuel which is good for home or pro use. Want a second keyboard or pedals , that's what Midi is for.
I do it all the time with myBK9. For gigs just the BK9 ,, for home I use the bass pedals.
I think my wife would feel blessed if i could trade in all the junk in my music room for just a single instrument that can do it all
76 synth keys upper, 76 weighted piano keys lower... Maybe ketron will do it? All they need to do is talk to their neighbours of GSI/Crumar (which is one company)...
There is also the new Organ brand Bemore ... which may create something for my music room.. high end innovative stuff.. yet at the more traditionall organ prices .. maybe just a little chaeaper then Bohm or Wersi...
Well, someone can allways dream.. probably its never going to happen.. but who knows?
Almost bought a used Wersi abacus last month or so duall manuall for about €2k.. but it looked really worn out, and there will probably not be a kit for upgrading it to OAX(the latest Wersi engine)