Michael,
I agree, it only for looks.
As for baffleing, I haven't had a "Lower End Pressure" problem. I have "Vented Valve Covers" with vent hoses plumbed to a "Common Collector" and then the Collector is plumbed to the Breather Vent on the Oil Filler Tower.
I personally direct my engine mods with fuction, efficency and try to not stray much from the "Original" Speedster/VW design.
However, everyone has their own likes/dislikes. (Wide Body/Classic/Type 1/Type 4 - ETC)
Good Luck,
Jack Blake