Honestly, I wouldn't even just mind hearing roleplayers reading their own their posts. It doesn't bother me if someone who sounds more or less masculine reads the lines for some macho brute, nor any other variation, but I do find value in hearing how the author works with the words verbally. I think some of us taste the words as we write them and like them to fit together like ingredients in a meal. If there was a roleplay where each writer was suggested to attach an audio file of their reading, I'd go for that in a tick. 

Here's a tangent too. I support anything that expands how we tell our stories. Drawing out characters and scenes, speaking out your post, obviously writing it, all of these are imaginative ways to bring the world to life. The more media to do with your story, the more likely you will tap into that something that really resonates with people. I think it gives everyone an opportunity to invest in that narrative, so hell yeah, I'd say push forward!