In order for the dubbing of D Grey Man to happen, Funimation needs to know it's worth the extra cost that the studio wants, since the first half sold very well. So make sure to buy it (if you have not already) and tell your friends (who are into anime) to do so as well.
As for Hunter X Hunter it's possible now that Viz (I think it's from them) has a new CEO that is focused on the anime division. So it might happen in the future, though I would bet some people want Monster more than that show.
Toho's Godzilla Will Live Forever!