Yes and yes and yes.
The basics of philosophy, metaphysics, epistemology could so easily and valuably be part of basic education. How can we claim to be teaching knowledge without teaching about knowledge?
It is sad that every parent who is told shell out thousands of dollars to give a liberal education to their child is being lied to. Todays "liberal arts" colleges (with the exception of one or two) are anything but. They have been turned into technical institutes. The result is that we are turning out graduates who can build but cannot think.