Honestly, I'd be surprised if this was the result. We're talking about a program in some of the greatest disaray in college football. I think announcing now will lessen the blow and of course when and if USU has another ofer or 1-12 season, etc. I doubt anyone in Logan will blame him.
You might have some haters, but you also have to remember that he also gave Logan a state football title. He's a hero in that town and I still think there will be more love than hate for him there.
While I get that this is a loss for USU, he's not considered the #1 recruit in the nation, like Ben O. was when he announced he was leaving. It hurt a great deal because of what we perceived to have lost. Just from looking at Rileys freshman #s, it's not likely that they expected the kid to win a ton of games on his own. His numbers suggest a mature kid that could handle the job early, but not a world beater (like Detmers freshman games)
If you're going to make a decision like he did; I'd say better to do it now rather than risk BYU recruiting too many others to the position; with Jacob Bower, Doman, and Cooper leaving, I'll bet the idea had bounced around Rileys head for quite a while now. The mere fact that Brandon Doman was a small athletic quarterback that earned a chance to not only start at BYU but play a little pro ball was probably all the convincing Nielson needed, considering he knows exactly when Hall will be graduating.
If Jake Heaps has mission plans, Nielson would fit nicely between Hall and Heaps; if Nielson can win the job from Lark and Munns.
Again, I think the only exciting thing about this is that we'll have some depth and competition for the position in the future. I don't think we can assume that Riley will be a star by any means. He does seem like a smart athletic kid that understands how to play QB; how that translates to playing QB in a top 10-15 perrenial program is still to be seen.