Why do plumbing fixtures default to “Fixtures, Interior”?

[PhillipsPlans23]

Good morning, everyone.

I was wondering about the default layers assigned to library objects. Is there a reason bathroom and plumbing fixtures are placed on “Fixtures, Interior” instead of a dedicated “Fixtures, Plumbing” layer?

Cabinets have their own layers, and electrical fixtures come in under “Electrical,” so having a separate default layer for plumbing fixtures seems like a logical way to organize them.

I’m currently making these changes in my own template, but I’m curious whether there’s a practical reason for the existing setup. Would anyone else find it helpful if the default layers were organized more clearly by category from the beginning?

Edited October 12 by PhillipsPlans23