I think you are quite incorrect in that last sentence, since “fully automatic weapons” have been strongly regulated since enactment of the 1934 Federal Firearms Act.

This still hardly does anything due to the filament design and emission difference between halogen and LED and Same with PnP HID. You’re still gonna glare people. Now your main beam output is lower to the road and you’re relying on the glare produced to illuminate the road ahead of you.

If you’re still going to put…

Don't forget the legalities of such an install...  As in it's illegal to install an led headlamp bulb..

The presence of absence of a cutoff, and the “quality” of a cutoff, such as its “sharpness,” “crispiness,” “straightness,” “sweetness,” “crunchiness,” “sourness” or whatever other qualitative descriptor that people have come up with, is almost irrelevant to glare.

Adjusting the aim to “fix” the beam pattern after replacing halogens with LEDs is akin to adjusting someone else’s glasses to better fit your face. 

As a former owner of several cars with leather interiors, all convertibles, I can’t emphasize strongly enough the need to clean and treat the leather regularly. My Saab, Miata and Mustangs seats all looked excellent when they moved on to their new homes, and Saab has been know to have similar seat issues to Volvo.