I am just joining the 121 world and I have started the hiring process. I was just wondering what opinions people have on having seniority in a company over other "benefits" other companies may offer. For example, is it worth it to join a regional and make plans to stay rather than "promote" to a major/legacy carrier and start at the bottom again?

I expect opinions will be along a scale of "it depends" on a variety of opinions, but I am looking for a rather generic answer to how much seniority really means.

Much appreciated! Look forward to hearing what you all think!