Thanks for the response. I would ask what do you use as GT history? I got out in '81. I can remember always players leaving for academic reasons but I don't recall players graduating early and leaving with eligibility. And the bulk of our players have always been focused in management/business majors in my time as a fan But, as you say, my perception is just that and I don't have data to support or refute my position on this.
This came up before, and I thought that we'd been graduating and losing more eligible linemen, but I wanted to double-check. I checked the rosters at ramblinwreck.com, and we've had a fairly consistent number of redshirt seniors over the past 15 years or so (as long as I've been able to check rosters). I also compared the number of our red shirt players vs a few other teams, here and there, and they're in the same ballpark.
There's only so far I can go back, but it's enough that it doesn't look like we've started graduating players faster.
It's possible that we've tried to redshirt more players and failed, and the number of redshirt seniors has stayed the same even though we've tried to add more, but I don't see an easy way to check for that.