I don't think you would get the same benefits as Erlang unless you either actually write in Erlang or replicate the whole fault tolerant culture and ecosystem that Erlang has created to deal with the fact that it is designed around unreliable networks. And while I haven't worked with multi-node BEAM, I bet single-node is still more reliable than multi-node. Removing a source of errors is still less errors.
If your argument is that we should in fact run everything on BEAM or equivalently powerful platforms, I'm all on board. My current project is on Elixir/Phoenix.