While playing around with the pads, I got the idea that a feature like "measure synced sampling" would be great for the pads.
It could be placed at the "Pad Record Select" screen:
Pad Record Select
[Phrase]
[Phrase overdub]
[Sampling]
[Chord]
[Measure synced sampling] [x=Number of measures]
Hitting that "Measure synced sampling" screen button, sampling would not start immediately, but it would start syncronized with the next "1" beat of the metronome / accompainment for the next "X "measures and stop after x measures hvae been played.
I'm thinking of some external MIDI gear like a DJ console or a looper. You could sync them via MIDI to the MZ-X and use them for example to timestrech a recording to the tempo of the MZ-X. With that suggested option, you could put a perfect sample of the recording at the correct tempo to the pad.