@snakefoot I see your recommendation for gdc over var,

e.g.

If needing to modify global variables at runtime, then it is recommended to use the GDC layout renderer instead. Because NLog variables are not threadsafe, and should be seen as readonly variables. Also GDC will behave correctly if LoggingConfiguration should change (or reloaded).

Is there something we could do to make the current nlog variables threadsafe? A lot of users find the variables more natural to use.