*Points to Boot Stamping on a Knytt Face Forever*
For quite some time now, I've been designing BSoaKFF with this feature, the only difference is instead that BSoaKFF uses the horizontal 2D plane, instead of attempting pseudo-3D as you have. If what I said doesn't make since, just view these two screenshots found in the BSoaKFF topic's main post.
(http://i232.photobucket.com/albums/ee235/JCtheGamePimp09/BSoaKFFOfficialScreenshot1.png)
(http://i232.photobucket.com/albums/ee235/JCtheGamePimp09/BSoaKFFOfficialScreenshot2.png)
When you press down where the road crosses the road you are on, it switches the camera's perspective around you to face a different direction.
Now of course the isometric angle gives it a nice touch, but we have the same basic concept, just with a different 4th wall perspective.
I think this could look really interesting if you keep it up, and I hope to see more of this later on.