My only take on high school math is fuck trigonometry — people who get to complex numbers can treat all of trig as a mildly interesting corollary, essentially no one else needs to know it.
Many of these require learning about complex numbers too (in which case defer trig until after complex numbers, when it becomes trivial) and if not, teach it as a short side course alongside all the other math you need. Don’t make high school students study it!
