Answer:
Include as much detail on slides as you have room for.
Explanation:
It contradicts some of the other points, if you add too much the slide will look overcrowded and be hard to read.
Answer:
MIDI might be a better option.
Explanation:
USB is much faster, and just as reliable as a MIDI cable. An external disk drive with a USB connection transmits data thousands of times faster than a single MIDI instrument with no problems! If you want to use very long cables, for on-stage work for example, MIDI might be a better option.