There's quite a bit of time between those 2 categories and you could say the same thing for Din's Pearl RTA and Any% or Earth Temple RTA and All Dungeons. This could simply be just another fun side category.

Ok thanks for the advice on the first bit and I get that it won't just be added automatically LUL.

I have an idea for a new miscellaneous category and it's called All Pearls. It's pretty obvious what you do in the run. Run ends when you acquire all 3 pearls (so on the Nayru's Pearl split).