A 5*QB in 2015's class, that wanted to be a Gator all along and rallied troops around him? No. I would gladly take that and roll the dice on prospects going forward. But as I said in my post, these kids that just quit and decide they want something different, a few months into their enrollment--without special circumstances--tend to be somewhat damaged goods. You're also completely overlooking the fact that USC is essentially the home team for him, and we'd be across the country, which could very well lead to homesick problems. In short, it's a reactionary move, and I'm not a big fan of that.
To your question on the 2* kid, no it's not about him. Though I think it's unlikely that the staff takes him if they truly feel that he is merely a 2* kid and doesn't improve his stock in his Sr year. But again, my concern is about Allen, not Task. With the sit out year, Towns is basically the same year as him. While you're correct about landing a great QB more often than every 4 years, that's an ideal situation. UF simply isn't that right now. A lot of these kids the past 2 classes, and probably for the next few as well, are being sold on playing time and being a center piece of the Gators' resurgence. When we are rolling again, sure, kids will come here knowing they have to wait their turn. Right now, we aren't that school. I've stated before that landing Brissett hurt us in that is clogged the QB position up(even if only by perception) and prevented us from getting a good 2012 QB, which would've been ideal.
You're also sold on a transfer by one of the QBs, and you could be right. I'm not convinced we see that. I think we have solid QB play for the next 3 years from one or both of the current guys. Add in some fillers, a 2016 commit, and a 2017 highly touted commit and I think we are in decent shape. But if you are convinced that one will go, that's all the more reason to create some separation through recruiting.