I don't think we should allow half the headlights that are currently in circulation. Once we get height and brightness levels under control, we can talk about extras.
Though I once discovered the inverse issue at the rear end of the car in front of me: Whoever thought a brake light should be a faint, red glimmer in completely black-tinted plastic (that's impossible to see from a few metres on a cloudy day) is either bonkers or pretty smart: I bet people actually buying these regularly need new ones.
Especially considering that with many modern cars, standing behind them at a traffic light and basking in the red brake lights feels like going to an adult club.
(Luckily I have radar with emergency brake assist, so except for the sound of me cursing to myself not a lot happened on the occasion).