I concur, but it’s feasible to smooth his change of voice (maybe the pitch of the theatrical version could also be altered to make Vader sound less old). I’ll give it a try (but only when the v2.0 of this edit is released in order 😃)
The “Rebels” sources come from which episodes (and what time ?). I like the idea of Vader’s voice in Rebels, who sounds better than in R1.