I think you’re correct about using the battlefields as monument parks, in general. Especially when you’re considering statuary that was purposefully placed in public spaces to convey a “no blacks allowed” message, post Civil War.
Now, let’s discuss the problem of the second most famous work of art carved from rock in the US, and the largest bas-relief sculpture in the world: Stone Mountain.
I have been out to Stone Mountain many times. I find it…..breathtaking, despite the fact that I have nothing but scorn for the cause for which the generals depicted fought. To me, Stone Mountain sits in a bit of a unique category, as it is (a) not a battlefield, (b) is not likely to be moved to a battlefield (to say the least), and (c ) is not just a Confederate memorial, but a legitimate work of art.
As a work of art, one hopes we do not stoop to defacing any work of art because either the artists or those depicted were scoundrels.