I have read reviews about that this pedal lacks of variety of sounds of that doesn't create good rhythm patterns. Well, if you are an inexperience musician of just don't know anything about music, armony, theory and rhythm, or in other words, if you are not a real musician, then don't get this peda. With all the features that this pedas gives you, you can play a whole concert by yourself. Of course, this pedal needs a musician that read the manual and understand all his features (real musicians). I have played a variety of songs flamenco to rock, blues, latin, folk and more.
The possibilities of relies on the musician imagination and and his capabilities. To me, this pedal is what I have been waiting my whole life. I just love it. Next to your effects pedals, you have the wolrd in your hands.
What could I recommed for the next generation of this kind of pedal, well, maybe just more memory, more parts for the songs, for instance a better ending than just stop (like fade-out or a final drum beat). Battery operation could be good too, for busking, but this can be solved with actual external batteries.