Man,you guys that ride bikes don't want much,do ya.LOL! I know out on the left coast if you don't ride in the rain,you pretty much don't ride.I ride my bike unless the snow covers the lines-my tires need more tread,and drive my truck in any weather,the worse it is the better I like it.
Back to the subject-for tilting the windshield,if it's done well,it'll be great.
Shaving the drip rails-notice how the manufacturers do it and duplicate it. Looks like it's largely in the door gasket design to me.
Speed