If you're going to roll with Joe, allow him to pick the staff. But I'm most curious who the 'veteran assistant' will be. And who makes that call? Brad or Joe?
There really needs to be an emphasis on player development because if they extend Jaylen, a lot of their roster flexibility goes out the window. So they're going to need to turn some guys with potential, but limited skills into rotation players. Which also means playing these guys, which doesn't jibe with the way Joe coached the team from February on.
Regarding Parish, I'm not a fan of the 'this guy was a great player, he'll make a great coach' thing. Parish had some off court issues with his ex wife where she accused him of abuse. Not sure whether that had anything to do with him never landing an assistant's job, but he's been out of the game for a long time now and has never coached at the NBA level.
Also the game has changed drastically in terms of a 5's role. And he's nearly 70 so I'm not sure how folks would expect him to relate to players who probably have no idea who he is and a coach literally half his age.