I forgot to include another point:

6) Some styles (specially latin) are too fast for playing the music they are supposed to be used to. We're trying to play latin boleros, but we get the lowest tempo for some 70, for other 80... this is not slow enough for latin boleros. I already know that the reason for this is the real percussion issue. I clearly understand this. But Ketron should think on including an "override" option on the config for this, so the musician can decide to degrade the quality of the percussions BUT be able to play at the desired tempo. 20% less then the default minimum is enough for all styles we found with this problem.

Thanks again,
Guillermo Rosado.