Why didn't Korg,Technics, Yamaha, Casio etc. include all the chord systems from other manufactures to broaden their appeal, the reason is everyone wanted to try and make their own system look like the best, (Which of course it never was) however they all include the standard chord system, meaning you can go from one manufacture to another with ease.
As I mentioned in a previous post, you have chosen to use the most difficult way to play chords possible, (The standard way is the easiest and most flexible way out there) so complaining that some other manufacture does not include your chord system is illogical and nonsense.
Talking of firearms, if you were in a sticky situation and your automatic weapon was not available, but a manual one was, would you complain to the gun manufacture or forum that it was not automatic and they should make it so, or would it be easier and faster to adapt to what is available.

Bill