Make this cross platform - Windows yes, Linux likely, MacOSX Android etc. As long as UE handles the file access it should be ok.
Infinite Terrain - Built in. Only problem there is floating point precision.
Right now I am at a stop on this till Epic decides to do something about runtime collision.
I see it is on there roadmap but I can’t make assumption about when or what Epic will do.
I have a lot fleshed out but because the engine is being updated so frequently I have to wait till the runtime collision is address before I can commit more time to this project.
What I have is based on 4.2.