To be honest I am not bothered which club he went to, both those coaches are in my opinion SL standard coaches who made some errors in there time towards the end of there tenure in Sl and both will be better coaches for making those errors.
Millward did a great job at every club except Wigan, and in hindsight, it was never going to work with him at Wigan, too much history.
Cullen may waffle on a bit but again he has proven himself to be a good coach, again in my opinion his only major failing looking from the outside in was that he became too close with a core section of his players and the working relationship with the group faltered.
I think both will be back in SL one day.
Regards who i would like Davies to work under it would have to be Millward, he has a habit of adding to Props games, look at the way Anderson, Mary and Fozzard flourished under him.
I am confident though, with the full facts at there disposal the club will make the right call in sending him to whichever club they choose.