Script access to plug in values

There are so many possibilities accessible with scripting. However the API does not allow for access to file pathing in plugin.

The one that comes immediately to mind is Apply Color LUT forces a user to Open a dialog to find the LUT we want to apply.

Instead, I’d like to have script access so I can do what Nuke can already do, apply LUTs thru a script call.

Many times, the lut is literally sitting next to the file, but we’re forced to find it thru an Open dialog.

Just make it so I can make a script that will go find it programmatically.
FileA dir

     FileA.####.exr
     FileA.cube

And I’m not looking for an interface for just this plug in, it would be any plug in that needs an Open dialog.