I don't consider myself either pro or anti-Dan returning, but I am, at least, intrigued by the thought of it. For a couple of reasons:
1) Yes, he spent every post-Halloween looking for greener grass. But did he learn anything from the Florida situation that it's not always better on the other side? You wouldn't want to re-hire 2017 Dan Mullen. But is 2023 Dan Mullen any wiser from the experience he had once he did finally leave and crashed and burned?
2) Has the ego improved any? Granted, ego is a big part of probably every major college head coach, but there were plenty of times where Dan's did him in, including leading to his poor handling of some in game situations, and basically every November-February from 2009-2017.
I will die on the hill that Dan Mullen and Mark Stoops are one and the same; Stoops just knows who he is and his limitations as a coach and program developer. What he's done at Kentucky is what Dan did here, to a somewhat lesser extent when you consider 2014 and some of Dan's other peaks. Both have an eye for poaching under-the-radar talent to feed lower-level programs and build them into sustained, quality programs. Both struggle against the upper-tier teams every season, but overall, end up shaking out 7-9 win seasons year after year in places where it's not necessarily a given. Over the years, Stoops seems to have realized his fit there, whereas Dan never did. The question is: does Dan understand his strengths and weaknesses now?