We've got several oddball "enthusiast" subforum such as Car Audio, Pc Building, etc etc
I believe I suggested this several years ago but went inactive from jsp for a few years.
My suggestion is to add a DIY/Woodworking/General arts&crafts/home reno, various other things that could fit into a similar category.

Thoughts?

Oddball? Funny cause I feel like EVERYONE here has a PC and most have cars.

I don't think car audio is needed, Think it should be a general section for cars and not specifically labeled "car audio".
Your suggestion while I'm not opposed to it needs to be more specific (like just DIY) and even then IDK how much attention it will get.
The pets forums seemed a great idea and lets be honest it died out almost instantly. Been around 9 years and hardly any activity.
Then again there's some game forums that are far worse and yet they linger.