Here goes,

1-If put a kaoss pad in your guitar you have to put batteries?

No, they way I accomplished it the body of the Kaoss Pad is on my pedal board, the guitar connects to it and it gets power from it's regular adapter.

2-I think Matt has the program memory keys in his guitar, why don't you have? Wouldn't it be easier to use different programs?

To my knowledge, the Manson guitar which Matt uses has a hold key just like I put on mine, this allows you to freeze the effect position on the Kaoss Pad, if there are further Kaoss Pad controls ( there are controls for the Fernandes Sustainer ) on that Manson guitar I don't know about them ( I doubt there are since they say technically it's not a Kaoss Pad on that guitar but a midi X/Y controller which controls a Kaoss Pad not on the guitar ).

3-If I don’t want to use another cable, could I use a wireless?

Wireless will require much more work. My solution was to just put the touch pad in the guitar, this does not output a midi signal, it must be converted into one, therefore a wireless midi solution will not work. You would have to either build or buy a circuit to convert the touch pad signal to midi and then you could apply a wireless midi solution. Folks keep asking about this, however, it would not be a simple operation and certainly not for a novice hardware hacker.

As for a demo with distortion, I'm currently looking for rehearsal space, once I've got a place I can crank up the knobs I may get around to this.