I'm very interested in making maps for valve games, and I have some degree of experience, but my biggest problem is... Hammer. It's really inefficient to use for making things like terrain, and things that should make sense, like lights, are confusing as hell. (Why is the brightness component really just controlling the color of the light?) My point is, are there any programs that I could use to make source or goldsrc maps that have a better UI, maybe something similar to unity?