Some very useful info there, and thanks as always to you all for sharing it, and giving your input.
I'll have a look at your site Andy. It really does need simplifying. Fortunately I had a Tyros previously so I was able to get it to work, but it wasn't too easy.
But....I think the message I would send to Yamaha would be this.
Imagine that the person opening the keyboard box for the first time, knows absolutely nothing about it, nothing about music, and nothing about how to play it, and so you're going to have to explain how this lovely instrument, of which you are justifiably very proud actually WORKS. From turning it on, to explaining the whole concept of playing it, and getting the best from it.
There's no use just sketching round subjects that new owners have absolutely no idea about, because that's where a lot of problems arise, and new owners find themselves very frustrated trying to get the best out of an instrument for which they have no instructions that make sense. Sure,more experienced owners will find it easy, but it isn't and I wish they would take that on board.
Just glad this forum exists, or I suspect that a lot of new owners would just lose interest, not just in the instrument, but in music altogether...........and that, in my opinion is a shame, and a completely avoidable situation.