"On GUI opened" global trigger and "GUI type/name" block

So, this trigger would be helpful when getting values or changing something whenever a player opens a GUI. It could be any GUI, so you should also be able to check what GUI it is, so I would suggest adding a "GUI type/name" block. For example, if someone wants to override the crafting GUI, they would use something like this:
 

If you're having trouble viewing the image, go to: https://i.imgur.com/9EeQAY3.png. I didn't use this site or similar sites, so, I uploaded it into another site in case it doesn't work. https://ibb.co/wRbjFKN

I made it in paint and I'm not good at doing these kind of things, sorry for the quality.

And of course, I'm only giving an idea. You'll decide if it may be useful, possibly break the code (I don't know why but anyways), should be modified to better fit, or even is possible.

Thanks, and please tell if it's already possible to do something like this.