It would’ve been interesting if the cultists had used Snoke’s body as the final piece needed to bring back Palpatine, it would’ve directly tied his return as a result from the events in the last movie. Pryde could’ve sent it, secretly conspiring for Palpatine to take over. Imagine Kylo finding the corpse of his former Master, tied to a machine and speaking in the voice of the Emperor. And then once he absorbs the power of the dyad he morphs into Ian McDiarmid, similar to his transformation in RotS.