I'm all about leaving off nonsense. If I want to add it, I'd rather it wasn't there to start. Reference FVM grab irons. I don't want to carve off poorly molded on ones, so if you can't do separate grabs of a proper diameter, leave them off!
So in this case, for underbody equipment, leave all the piping and levers off unless you're going whole hog. Major components like valve, reservoir, etc, are fine to add. But don't make me remove stuff to make it right!