The problem is that the entire plot hinges on the dyad. I don’t buy for a second that Palpatine would absorb enough latent energy left over from Snoke’s mind bridging alone to fully restore him. At that point, why didn’t he just drain Snoke himself? There would be even more energy inside of him, after all.
So you HAVE to make the dyad make sense. And in order for the dyad to make sense, you need to go back to the previous movies and change some things (at least that’s how I feel).
Big sad.