I have never gotten around to putting up outdoor lights, but if I received a letter like that, I think I would run out to a local store and buy a big yard creche and a giant star, and then put a Santa and reindeer on the roof, like we had when I was a kid.
Christmas trees were 1st a winter soltice celebration, and lights are just pretty and peaceful!
I know my neighborhood has gone a liitel bonkers with Halloween (giant inflatabile Frankensteins, 10 foot jack-o-lanterns, ghosts and spiderwebs engulfing trees) and no one got offended, even the Christians and the church that meets inside the elem. school nearby!!
just by saying "pretty please with sugar on top" does not make it going to happen.
There was a story of a Jewish family that had rocks thrwn thru their window when they placed a menorah in their window. the whole town then decided that each store and home would place a menorah in their windows, to show community spirit and the true love of Christmas.
Maybe this neighborhood could do something similar-peaceful white lights for all, offenses for none!