Split Sequels and the possibilities of multi-ID saving

My main train of thought (I am FULLY aware you can have the scene list do tricks in this regard*) was that the bigger a game is, the trickier the above method might end up.
I am REALLY just talking about games where the differences in endings would justify two separate games.

  • The easiest method, of course, would be the variable and then have the scene list go something like this:
*scene_list
   Ending_13_start
   13scene1
   13scene2
   13merger
   Ending_245_start
   245scene1
   245scene2
   245merger
   3_scene3
   3_scene4
   end

or somesuch