Sorry for digging up this thread, but how does one activate C# support? Does it come with the engine nowadays or do you have to do something special?
I must admit that I’m in the same boat as the OP and while I am far too deep in Unity with my current project (to the point there’s too much work done to just throw it away), ability to use C# in UE4 makes me seriously consider it for my second and perhaps future projects (since UE4 has better level editing tools, even with plain old BSP and with geometry 2.0 it is/will be, haven’t followed the news about it, even better).
//edit: I was referring to this post: Mono relicensed under MIT - C# for UE4 can come back? - General Discussion - Unreal Engine Forums