If you ask most arranger players (Rather than piano players) the last thing they want is a heavy hammer action keyboard of 88 notes, however if you want to build something like a clavinova (Which are expensive) then it is a good option.
Bill
But then there are dozen choices for a 76 and 61 key arranger and exactly none for a high end 88 key mobile arranger..
Ever since my GEM sk880 this is a void..
Why would you ever want to build your own 76 or 61 key arrange with so many viable options?
Oh, by the way, the orriginal lmk4+ is perfect for lower end keybed under a wersi oax1.. if you want piano action. And since wersi has no 88 key option, its also a great thing to build a lower key for any other setup..