I've always thought that Baptism Lutheran would be an interesting name. And at least to me it ties back into what I think this discussion really is, which is how do you find/know the church. At least for me this has been taking a much larger role. We like to argue about doctrine, and it isn't that this is unimportant, but Luther's 7 marks are: The Word, Baptism, Communion, The Keys, Ministers, Prayer & Worship, the Cross. There are rubrics and doctrine might guide those, but all of them are relatively simple. You know if you practice them, or if you don't. The practices, which include that hour of trial which comes out of the prayer and study of the Word because Satan isn't passive, are definitive. It's a nice bonus if you have a correct understanding of those practices, but the practices take priority. They are what define and form.