I'm assuming you're talking about the webbing on the underside of the hood...
#1: This class is supposed to be about driver vs driver, not tinkering with the cars. We don't want to end up like Spec Miata, with all of their drama and assorted nonsense. Win with driving skill, not with being clever with a wrench (or Sawzall).
#2: It can be a safety thing, because the hood crumpling will absorb some force in an impact. How much that actually matters is up for debate. I think it's pretty common knowledge that the hood is part of the front-end crumple zone in most cars though.
#3: It makes your hood dent or lose shape pretty easy. I did this on another car before I came to 944-Spec, and it didn't take much to cave the entire hood in. It's a large surface area of thin, unsupported, sheet metal.