After completing a mission once, there is an option to set the goal as unlocked. It allows for some cool skips as seen here:

Should it be added as a seperate category, or should the rules be changed to allow unlocked goals?

One way or the other it should be added, it is much faster. Maybe not for easy missions, it makes that a little too easy perhaps. But it should be okay for the others.

I really want to see an All Difficulties Goals Unlocked single segment one day.

I think that the All Difficulties run should perhaps become the default featured run if it is ever run, the full game category should be featured above the seperate level packs.

I also think it is worth ordering the level packs in descending order, to highlight the more difficult runs first.

I have been using keyboard, but I am going to try switching to mouse for some levels.