The category "All Stadium Events" already exists, and works as you described.

Is there some difference between that and what you're thinking of, or did you just happen to not notice the category? It's the last category on the list, with only one run submitted.

Ty for the clarity :)

Looking at the speedruns, it seems 1.0.0.5a.

Which patch specifically is run in this category? It's not listed in the rules or anything.

Yeah, looks like it only took 1 day to verify the run. I'm still considering giving mad crab runs a go. Looks fun.