I agree. Isn't shinning a laser on someone an assault?
Could be, it could also violate many other local laws as well as just being stupid and a hazard in itself...
As said the tail light should consist of two banks of LEDs, one banks is the driving lights the other is the brake lights... When driving only one bank is on, when braking both banks are on to give the higher intensity...
As I said in another topic here if you want to get fancy (it probably violates DOT and local vehicle code though, but so do LED upgrades as most are not approved to start with) is to put a few self flashing/rotating RGB LEDs into the braking bank so there is some eye catching 'wave' like movement when the brakes are applied, it's subtle but it does catch the eyes... I have done this in a few of the lights I have made, I came up with the idea after my dad has been rear ended multiple times on his motorcycle when slowing down and braking and wanted a way to make braking more obvious... Using a few rotating RGB LEDs creates just enough change in intensity that it's eye catching but not distracting...