“litvaks” don’t wear lace top shaitels. Modern, baalabatish people do it because they want it to look as though they’re not wearing a shaitel. All the litvishe poskim clearly ruled that they’re assur.
Who said a long shaitel is more tznius than a tichel which leaves less than a tefach exposed? Lomg shaitels are alluring. Tichels are not, even if a small amount of hair is showing. Halacha allows that. It does not allow alluring styles, which include long, fancy shaitels.
And no, foreign as this may seem, most kiruv workers do not stand in the street, expose tefilin to pritzus,and then wrap these holy objects on the arms of people full of machshavos asuros who probably don’t have guf naki and whose hands have been heaven knows where.