The whole thing is a total mess at the moment, so I'm personally going to stay away from dnx until MS produce something that's close to their old RTM quality releases. It seems there's even a rival system with the dotnet CLI.
So I disagree strongly with the OP, it's not a great time to be a .NET developer. The improvements to C# and F#, yes, fantastic. But the ecosystem around it is so brittle at the moment; which is something that we never had to deal with in the past, and was one of the big selling points of the MS ecosystem.