What would be the rules for this category? when would time start/end? I've been wanting to do a serious run of this for a while now, but its never been made into a category.

• Collect all Rainbow Pieces from a clean file
• The use of multiple controllers is not allowed
• amiibo is not allowed

Time start: When selecting "Story Mode"

Time end: When the final rainbow piece is added to the puzzle

The category may be considered if you made a run, and would almost definitely happen if a few people made a run.

Also all Switches would be required

so if all switches are required than is it a story mode 100% run? cause you can get all rainbow pieces without all switches.

If you want to call it that then sure. BTW, even if you did a run I still wouldn't add it just because you've already done a 100% run as well

No, there are rainbow pieces in the extra stages

Some Switches only unlock Dream Houses which you aren't required for Big Pieces

Oh yeah, forgot about that