Etan Cohen has some good work under his belt. He was involved with Mike Judge for years, and wrote on Beavis and Butthead and co-wrote Idiocracy. He wrote on Tropic Thunder (although I don't know what - that script's history is complicated). And he wrote and directed the short film My Wife Is Retarded, which is the best sounding title I've heard in a while. But lately he's gone Hollywood, writing movies like Men in Black 3 and Madagascar: Back 2 Africa.
So I don't know whether or not Cohen coming on to write the latest version of Ghostbusters 3 is good news or bad news. On the one hand it's definitely bad news because Ghostbusters 3 should not exist. But on the other hand maybe he'll bring some of his early skills to the table and actually write a funny movie.
That does seem hugely unlikely, though. The good news is that I continue to doubt that this movie will ever happen. The bad news is that I don't doubt that should it happen it will be terrible and sad.