"This is new technology"... OK, but please tell me why none of the 'open system' manufacturers was able to show a decent/impressing demo?..... even after more than 5 years of developing.

Magica Alfa, you seem to be saying brands like Roland, Yamaha etc. do not offer 'freedom' in using the instuments.

Please explain to us what extra 'freedom' you need on top of what e.g. a Tyros2 offers?
Tyros2:
Lots of fantastic internal styles,
B3 sounds including great rotary-speaker sim.
Very very nice sounds such as Super Articulation.
Multitrack recording,
Proprietory OS (fast, robust, compact)
Sampling
etc...... All without (expensive) VST/plugins.