This is something we are working towards and we are not letting go of C#, we are actively developing features to make it easier to use.
If you have a specific query regarding how to use a particular feature of our C# integration then we would like to hear your what issues you are having.
Come to think of it. I can't get the C# solution file working.
For example, I have a C# project. I right click the file "Game.cryproject" > "Generate solution". Then I got the file "..\Code\Game.sln", but weird that it said this solution file is not compatible with my Visual Studio 2015 which is working totally fine with C++ solution. I really want to try C# feature in CryEngine, but this bug is preventing me do that.