oh for sure, I wouldn't necessarily even run it on a large show, but I would definitely like to use it for pre-program situations.
You can import images into MA in bulk now, so theoretically you could put all the images from the catalyst thumbnail folder in the image folder, import them and write some crazy macro to assign it to gobo presets.... I was working on this for the last version 2.9.1.1, but there wasn't command line for assigning images to presets. I still don't think there is.

There is a web server folder in the onPC version of GrandMA2, It appeared also in 2.9 I think but it basically didn't do anything. I now see more functions in there and they are taking suggestions. I am not a programmer at all, so I wouldn't even know what to tell them.

Maybe worth taking a look, also, I would love to try out your program for catalyst if it's possible.