Has anyone done extensive testing on what scripts do or do not work in GM mode?

I built a map with several scripts and features with the intent on using it for both GM mode and an adventure mod.

When I tried to test the map with a friend I ran into several issues, not the least of which that it sends the player to some random broken map. He was unable to load into the map on several tries.

The GM Faq on the wiki states that scripts do work, but I find that many do not. Before I do an extreme amount of testing, can anyone speak to the script types below in GM Mode?

Specifically, can anyone confirm whether any of the following work in GM mode:

Scripts with PlayEffect

The journal / quest system

Scripts with SetOnStage

Secret Dirt Piles

Subregion UI notification

Any comments confirming these, or really any other type of scripts, would be great.