Aluminum, fancy. Mine is just plastic. I like the new rule. $20 replacement windscreens (all double-bubble for some reason) instead of trying to hunt down another used stock windscreen or paying a dealer $$$ for it...if I ever happen to crash and break the windscreen again...
For what little it's worth, from a safety crew POV it's not super common we'll get the rider numbers from the front square on. It's the rear sides and even bellypan sides that helps us quickly ID someone. Again, fwiw..
I honestly stopped caring two years ago, since then it's been going through the motions and nothing more
If you're giving in on the double bubble situation, I'm really nervous about what you have planned in your quest to kill roadracing.