Its really difficult. The exact placement of individual trees in the game matters a lot and it affects line of sight, which is a key component to Dota. If you flipped the view, not only would it just be weird, but what is visible can change I think based on the camera position. A tree that blocks a path in one camera position doesn't block it in another. A single tree's position sounds trivial, but navigating them is crucial at mid and high levels of play.
This is really perceptive and on point. I think something a lot of casual observers miss about Dota is it's a game of momentum with very small edges that accumulate. Compared to the other MOBAs it's the game that punishes you for a single error far more harshly.
