Merging expressivism and noncognitivism could be a good idea so long as the following difference is still made clear  I may be mistaken on this point and if so ignore me but feel fairly certain about it  Noncognitivism is a negative claim about moral statements or at least a significant subset of them  see Ayers four types of moral statements  It claims that they are not alethicfactual in nature  However expressivism is a related but separate claim that moral statements while not alethicfactual do express something nevertheless  One could be a noncognitivist without being an expressivist by holding that moral statements are nonsensical and express nothing whatsoever  However it just so happens that noncognitivist tend to be expressivists     October