I want to know if this is possible too!
Right now there isn't a way to do it, but we plan on opening it up again one more time at some point. We're just not sure how to decide who gets a slot. It'll be pretty limited in how many more we can do so sadly we likely won't be able to let everyone who wants a voiced name get one. Because of that we're trying to handle how we do it carefully to avoid it being too disappointing. We'll make an announcement when we come up with something, though!