Yeah we make mobile games in unity at work, it is powerful but those big features like normal maps and light probes do hit performance quite heavily. You would have to be very careful how you optimise your game if you are using per-pixel lights and normal map shaders. You can use unity vertex lighting and lightmaps and…
I was thinking something along the lines of Shadowgun for android (possibly ios, i'm not sure). Unity 3.5 has some pretty awesome rendering capabilities for mobile games with lightmapping, occlusion culling and the new addition of light probes. I've actually just found ben mathis' portfolio and seeing the topology of his…