I don't think it's really "there's no need for one". Korg and Roland's 76's have done well. The need is there, but Yamaha (for reasons unknown) stopped after the 9000 Pro.
IMO.., Yamaha does any and everything they can to keep a very fine line between some of their keyboards. It would appear they don't want some of their models being any type of competition for another one of their models.., which is IMO why they so severely strip down some of the lower versions of particular keyboards.
I think a 76 Tyros would sell very well.., hell the case is already long enough for it. I think Yamaha is just comfortable where they are with the Tyros. They feel the fan base they currently have is doing fine I guess.
I will say that I honestly think it really boils down to a weight issue. Korg and Roland users are already used to the 76'ers and I've noticed that the issue of weight isn't brought up with them as much as it is with Yamaha arrangers. Perhaps.., Yamaha's not wanting to lose a large percentage of their customer base who are very vocal about keeping the weight down. I think that if the Tyros started as a 76'er and continued today as a 76'er.., well the fan base would already be used to the weight and would have accepted that by now.
[This message has been edited by squeak_D (edited 09-03-2008).]
GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.