What exactly about that battle system?
The screenshot doesn't really tell much about the mechanics.
If you're talking about the graphics: 3d graphics are possible, but, frankly, I don't see the point.
One of the strongest aspects of using RPG Maker instead of using another engine, for me, is that I can use the fantastic built-in map editor to quickly set up tile maps. If I were going to use 3D maps, I wouldn't need a tile mapping tool, so I would just go straight to Unity.
Now, if you are looking for a mix of 2D tile maps and 3D battles.... that might actually be something interesting. Not easy, not quick, but not impossible either.