I appreciate the subtle hints sprinkled throughout this edit and I respect the conservative approach, for now though I think making the current hints a tad bit more noticable specifically the blue smoke which I think might go under the radar for some people.
That’s kind of the point though. It’s part of the subtlety, you know something’s up but you’re not sure what. Snoke dying in a big dramatic Force explosion would take too much attention away from the intended focus of the scene, Kylo and Rey’s brief team-up.