re: In the next 15 years, do you see Bama ever losing 3 or more games in a season?

Seeing as how they've never gone longer than 9 years without a 3-loss season in their entire history (and that was when they were only playing 10 games a year), I'd say going 21 consecutive years (current streak of 6 + 15 more) with 2 or fewer losses is highly unlikely.