The blind leading the stupid now I see.
HIDs in a halogen light housing will never "properly project" the light because the halogen housing is designed for a specific amount of light to be coming from a specific source at a specific position. Headlights are not like a reflector in a flashlight or a spotlight. They are designed to shape a beam of light into a certain pattern. They do this by using lots of maths to figure out angles of reflection based on a filament at a fixed position with a fixed orientation.
The reason an HID bulb fails in this aspect, even if we buy a quality system (pro-tip: there are no quality systems, just some companies sell the same stuff for more money and say it is a quality system. They are all made in the same chinese factories by guys getting paid less an hour than you spend every time you wipe your ass), is because the HID produces a ball of light at a position which frankly, is variable depending on the retrofit bulb you are using, is not the same shape, size or position of the filament it is replacing, and is far brighter than the original calculations for the reflector geometry accounted for. Aiming down rarely helps as much as you think it does because there is still going to be scatter, and because the HID generally lights part of the high beam portion of the reflector even while in the low beam position.
Yes, any modification to your headlight housing is illegal. I haven't seen any cops EVER that are more likely to pull over for a projector retrofit than a PnP bulb, but cops can't be sure that your headlight is not a DOT approved headlight without actually researching it. See, unless the officer knows for sure that no one has produced a DOT approved projector housing, then they don't have probably cause, and they can't be with all the ridiculous aftermarket crap you can find online. Funny how that due process works. They do however know that a PnP retrofit is illegal, and they can and do pull over for that, especially when it is an annoying color, they are in a bad mood, or yours is particularly blinding. Either way, if you are going to do something illegal to your headlights, you may as well do the thing that isn't going to cast ridiculous glare into people's faces. Furthermore, if I hear one more time about how "No cop has ever pulled me over, I never get flashed" from people, I swear I am going to lose it. Here's the thing. Most people won't flash you, no matter what. Aside from the fact that they don't want to chance a confrontation, most people just get annoyed and ***** about it silently, because that makes them feel better, when they can tell you off, even if you don't hear it. Plus, many people don't react that quickly to it, don't think to do it, or just don't do it because they don't want to flash the other drivers around.
Until SOMEONE can show images of a decent beam pattern coming off a PnP retrofit, the facts stand that they ALWAYS cast unsatisfactory amounts of glare into oncoming traffic. If you disagree, take a picture of your headlight beam against a dark wall at 20 or 25 feet. I will match those conditions and show you the beam pattern from a halogen reflector, and a proper HID projector or reflector.
Also, every time you use an apostrophe for a plural, Jesus kills a kitten. That, and you are just some guy who thinks he knows about HIDs, just like the guys who work at best buy think they know about car audio, or computers, or the guys that work at walmart's tire and lube think they know about cars. Get an education in optics before proclaiming yourself an expert.