C# console applications (no Graphical UI) can be compiled to run on Linux natively. It is not the same for Win-Forms applications. they can't. WINE is your only option.
VARA is the first obstacle to overcome. There are no plans to port VARA to Linux based on my knowledge. 73s.
No. VarAC is a C# application and as such it requires a "mediator" such as WINE / VM.
73s