Thanks for all the feedback provided! Right now, I'm working on fully separating the API part from the GUI, thus, I've created a new GitHub repository for Monero API .NET, which could be used by merchant services to easily utilize Monero core functions from the Microsoft .NET programming languages.

I've just gone on a 1-week holiday, though, but will try to continue the developments as soon as I have time (for instance, airplanes are perfect places for this task ).