Okay, this but with a great caravan of amphibious Ford F-350s stretching from San Francisco to the Holy Land and I think you've synthesised something Americans might latch on to.

You can still kind of do this, The Way of St. James is still a very popular pilgrimage route in Spain and there are other routes in Europe. You hike across Spain with just a change of cloths and stay in these tiny Spanish villages with communal pilgrim inns and good cheap food. You get to meet people from around the world, most of whom are not total tradcath psychos, and walk with them for a whole day. Its also lost some of the religious character, I went with my mom a couple years ago and we are both very lasped Catholics, and we met a decent number of agnostic/atheist people just there to hike or who liked history.

to be fair, that is a narrow understanding of Protestantism.

There is definitely a section that really stress the "through faith alone" thing.

But there are also alot that were and are part of the Social Gospel Movement that started in the latter half of the 1800's.