We want a proven premiership coach.
All clubs want a premiership, a proven premiership winning coach isn't the same thing e.g.Tim Sheens at the Cowboys, Des Hasler at the Dogs, and Ricky Stuart at the Eels and Canberra and of course John Monie
Phil Gould, Wayne Bennett and Tim Sheens are probably the exceptions in the modern area in that they won premierships before and after moving to new clubs.
Gould started the trend of being a premiership winning director of coaching with Ricky Stuart at the Roosters but he hasn't carried that on to the Panthers.
I think Wayne Bennett at the Knights has shown that appointing a premiership winning coach isn't the answer if you don't have the roster or overall support to work with.
There are more examples of a new coach winning a premiership e.g. Paul Green, Trent Robinson, Michael McGuire and Craig Bellamy.
All of those coaches had an outstanding support team around them from the front office to the team on the park.
Cappy had so much support from the Kiwis in the Warriors he was appointed an assistant to Kearney
until he got the top job at the Warriors.
So assuming Cappy still has the dressing room at the Warriors, and also assuming that it is really JD who is running the club I don't think it matters if there is a brains trust behind Cappy.
I have always rated Ivan Cleary as a true professional. I think he has unfinished business here and if he were being brought in behind Cappy I could only see it being for the better. Just my opinion though.