I have configured a bunch of Global Variables in the Analytics Extension, but my page load rule doesn't send them. It only executes the ones set in the custom code section of the Analytics Extension. I don't have any overlays in the "Set Variables" action at the moment it is actually empty. The only thing I see in the tracking call are the props that are set as duplicate frrom the eVars. But even this doesn't work in any other rule on the page, there nothing except the explicitly set eVars and props are sent and nothing from the Global Variables.
I completely refactred my Launch rules, so no, this is no longer relevant. I do everything within a doPlugins method as I anyway have som custom code I need and thus prefer to have all variable setter in one place instead of spread between the GUI and the custom code.
Have you already read through the Analytics extension Plugin support thread? Adobe plans to add something akin to doPlugins in the Launch UI, so if you're able to share your use case in that thread, we can ensure the feature is applicable to you once it's released.