Couldn't agree more with you. That's probably the most effective and important mod to do.
These days projectors can be had for cheap. E46 or TSX projectors are affordable!
HID retrofits are something I have drooled over for YEARS. I wish I could do them myself. I've read a couple reviews where people say it's not that hard, but is it really not.that.hard? Somebody do it and post a DIY!