What's the best pipeline for my team?
When you create a coach in Dynasty Mode, you will choose a pipeline for the coach. Narratively, this represents your coach's professional background - where did they cut their teeth before getting this position? Where do they have the most connections with high school coaches? Mechanically, this is a way for CFB 25 Coins to choose which region you want a leg up in recruiting.

For example, I have a Dynasty Mode file with Maryland, where I went to school. For my coach there, I chose the Tidewater pipeline, because it covers the region Maryland is in and generally likes to recruit from (there's no official explanation of what "Tidewater" covers, but because Maryland, DC, Virginia, and Delaware aren't pipeline options, I think it's safe to assume that's what Tidewater means here). My goal in this save is to eventually dominate the Tidewater region with Maryland and get the best recruits there year after year.

But for a dynasty in New Mexico, a school I don't plan on staying at forever, choosing a pipeline in Texas or California might make more sense than the New Mexico pipeline. Both of those states are close enough to New Mexico that I'd still be fine on the Proximity to Home rating, and hopefully, it'd allow me to snap up a few overlooked recruits from those jam-packed regions.

Schools also prefer coaches who have pipelines that synergize with theirs, so if you're starting a dynasty at a one-star school but eventually want to land a job in Alabama, it might be wise to cheap College Football 25 Coins and pick Alabama as your pipeline.