RPG Paper Maker is a game maker engine including a 3D universe with many 2D sprites and some simplified 3D objects. Pretty close to the RPG Maker series, RPG Paper Maker finally give a way to create RPGs in a totally 3D universe as easier as it is in 2D!
As a rule, binaries doesn't belong in source code repositories unless absolutely necessary, they are supposed to be generated, exceptions being files that are difficult to generate or fetch from an automated build process (how do you generate images for instance?).
As such it would be nice if the DLLs for MonoGame was replaced with a nuget package
Which binary files are you talking about? The images are generated by using Resources.resx into Properties. What's the problem of using DLLs instead of nuget package here?
As a rule, binaries doesn't belong in source code repositories unless absolutely necessary, they are supposed to be generated, exceptions being files that are difficult to generate or fetch from an automated build process (how do you generate images for instance?).
As such it would be nice if the DLLs for MonoGame was replaced with a nuget package