One that sticks out to me is The Republic. If you said, "we acknowledge the strengths of many of the ideas in the Republic that Western civilization foolishly abandoned in the last 100 years" - you would already be saying so much about what needs to be corrected.

What proportion of the population do you think would even understand what that means? As you noted, I'm pretty confident that this is one reason why so many classics have been removed from primary education.