Diki,
You're dead on in your response. I honestly can't see either of the big three making a high end arranger that is capable of producing the same quality of Hip Hop as you could on a Motif, Fantom, or Triton.
It essentially would be something like a Motif with arranger capabilities. I will tell you from personal experience, there will be some difficulty in terms of limitations (even with a high end arranger) when it comes to Hip Hop, Rap, and R&B.
Sure you can program a style, but you really need total freedom (without being restriced to a particular key) when recording the bass part. Also the way an arranger is set up with fills would also make it a little more difficult with both the drums and bass as well.
The closest attempts I know to date to this type of keyboard was the Roland EG-101, and the original Yamaha DJX.
Squeak
[This message has been edited by squeak_D (edited 07-19-2006).]
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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.