The problem with adding C# non officially by Epic is, the thing is so huge, that it will always be around 2~3 engine versions behind.
Expect C# for 4.13 when we are at UE4.15 or even worse…
I totally understand your point since I came here from C#.
However, you won’t see SIGSEGV under the UObject system; just use UObjects and/or TSharedPtr and you’re free from that nightmare.