It will be very useful to remove not only dust but dead pixels on sensor. My canon 5dmIII sensor was damaged by laser, i do not want to waste money for sensor replacement. In my case remapping pixels works very well and i think a lot of people have the same situation.
Note: the inability to put spot removal and paint settings in a preset is due to UI omission (dunno if programmer blunder, or on purpose..). The presets themselves are happy to have spot removals and/or paint in them.
So, this script will put your spot removal or paint settings in your preset:
'Add Spots Or Paint To Preset'
Said script is free, was written by me, and is available here: