The three representativs match with the three gods forming the absolute. While it seems quite clear by now that Bhaal, Bane and Myrkul are the Absolute there are some major questions remaining:
How do the Illithids fit into their plan. How do they form the telepathic unity known as the absolute. Are the three going to fuse into one new god. What does the githyanki artefact have to do with it.
HarbsNarbs did a summary video for the aforementioned thesis on youtube.


I sometimes use thought experiments. I don't necessarily believe in every idea I post for discussion on this forum