Yes, the fact that Snoke is dead is creating a power vacuum. And the fact that his first act as Renperor was a complete failure because of his emotions, means that the armies are more likely to follow Hux than Kylo. It’s a power vacuum that we’re going to see happen in Ep 9.
You saw how the men weren’t sure whose orders to follow – Hux always gave them orders on supreme leader’s wishes, Kylo always stayed away. Will be a problem if he wants to lead – aside from all the other stuff.
I don’t quite know what you’re saying with the middle of ROTS, but yes I think we’re in the middle of a fantastic enemies to lovers arc where both are now fully aware of their feelings – and have to deal with them knowing they’re ‘enemies’.