Oh yes...please please please be kind to us voice actors and avoid unpronouncable names or names that are too long. A pronunciation guide is really helpful.
I still remember Anthony Stewart Head stumbling over "Puyallup" in the audio version of one of my Khan novels. Which is a real town in Washington state that, in his defense, tends to trip up anyone who didn't grow up in the vicinity.
But, yes, when it comes to Trek novels, submitting a pronunciation guide is now pretty much standard operating procedure.