I too am involved in a project with a significant number of scenes. I have just begun to investigate this topic - no experiments yet. Below are (2) links to threads on this forum that might prove of value. The ability to preload other scenes from a particular scene would be a useful feature for Hype.
Even though the second thread's title references getting *element properties* from another scene for a current scene, the posts in this thread go over preloading a scene in order to achieve this. The quote below by the OP ( @vinay ) seems to be headed in the direction You are looking for (post 11 of 12):
You are right… this is what is happening with Hype.
Today, I’ve managed to achieve this, after a bit of educating myself with some jQuery and JS…
nextScene = $(".HYPE_scene").filter(":visible");
This works now!