I hear what you're saying... I'm considering a lighting upgrade as well. We have deer, elk and slow elk (cows) aplenty out here and more light would not hurt if you got "caught out".
A friend of mine was on his bicycle and got run over by a elk - broadsided. Broke his hip, leg and internal organs scratched & bruised. It took him nearly a year to heal up! He still doesn't remember what happened - the impact knocked him unconscious and in the ditch.
Lucky for him, his wife found him.
The foam idea is taken from the pages of the KTM hard parts catalog. If they sell it, it must work on some level.
Dual Sport Riding - The DVD!