Some NuGet packages load native assemblies at run-time that are expected to be in a specific folder relative to the root folder. This makes LINQpad incompatible with these packages as LINQpad does not maintain the folder structure.

Having the ability to explicitly add a folder rather than a file to a query will allow you to maintain the folder structure the NuGet package expects.

Ex. https://github.com/charlesw/tesseract/issues/484
I also had to implement a similar workaround to use some methods in the ML.NET libraries (tensorflow related).