Can people make up their minds? First they complain non-stop about aggro then they beg for murlocs to become viable?
They already have so many murloc cards out there with so-so synergy and it would take very little work to make them viable. They're basically the pirate tribe except a little better: an existing tribe with a few synergy cards but little to no meta viability. Murloc would certainly increase the number of aggro decks out there, but it would also make shaman relevant again, which is something I definitely believe needs to happen again. Shaman class is literally dead in the water right now.