Well... you can - sort of...

To re-order presets - you would have to run the preset, then snapshot it to a new location.
once you've checked the new preset, you can clear the old one.

You can't re-assign the control+keys, but you can trigger presets from 'Hotkeys' - but wouldn't recommend it.

Better to use a cuelist and re-order the cues if the set-list changes.

Simon