The advantages of Elixir over Erlang, for me, mostly come down to the modules in its stdlib and package ecosystem.

If you don't enjoy writing Elixir, you could always just install Elixir, and then write Erlang that calls into Elixir-stdlib modules.

I believe you can even install Elixir packages into an Erlang rebar project, if you like. No need for Mix or anything.