An example: A large part of the Erlang standard library is not translated in Elixir. Instead, you call Erlang methods with a seamless interop. José & co. understand that there's no need to reinvent the wheel and no benefit in another abstraction. I like that.
My least favorite part about Elixir is that it has become a "trendy" language among the web crowd. While the community is overall great, there's always a loud minority of "beginner experts" both claiming it's the best thing ever and deriding those for using other tools. I've seen a lot of random, unwarranted Rails bashing and Elixir shilling (never from a team member or community leader though!).