Maybe I need to move to Texas, where both high school and college games use basically the same rules ; ).
Texas guys struggle with the same issues and have for quite a while. I don't recall exactly when it was, but a few years ago, the small college conferences (around here anyway) went mostly TOWARD feeder/trainer type conferences for D1 (with camps, crews from different areas, etc.). Not that that's a bad thing but it created the problems we're talking about here. Prior to that, the assignors would hire the crew chief, have him form the crew from his area and expect good results. That's how many of us got some college games.
Its one thing for the FCS/FBS conference guys to think about quitting high school (especially in Fed states) but it is ridiculous for small college guys to. In my experience, you don't get paid enough and don't work enough games per year to keep your skills up. Snaps, even at the high school subvarsity level, are important. Anything to keep your mind in the game. Its funny that, years ago, assignors in D3 conferences in the south loved Texas guys (due to using NCAA rules on Friday night) so much, they insisted on putting ONE Texas guy on each crew instead of a few Texas guys on one crew so they could travel to their game together (or more easily). Yet now assignors are saying don't work HS football for whatever other reason. I know guys that quit D3 ball because after travel, they made more money working peewee on Saturday and it took less time to do it.
High school has a huge problem. The good, young officials that get started want to go to college ball as soon as they can and the older guys are retiring. What's left is, well, ...