Another way of looking at this rookie situation is, how might Brad play them?
My initial impressions:
Jordan is a bit short for a power forward and could possibly be given trials playing against the other team's highest scoring 3. He has the skill set of a 4 though. So, I am not sure where he fits in. He can block shots, but will he be able to keep bigger players from grabbing rebounds or getting position on him down low?
Surprisingly, it may be his scoring ability that rescues him. He always seems to find a way to be wide open. He's not noted for his shooting though. So, we'll have to wait and see.
Rozier is quick and strong, yet not as strong as most guards in the NBA. He has some play making talent and a decent shot. So, he might find time playing along side just about anybody. Isn't that the trend lately in the NBA?... players who can shoot and have some play making skills. Okay, they should be 6'6" or taller too.

RJ is another enigma. What type of player is he? Initially, there was talk about him possibly having difficulty getting off his shot because of his low release. After watching him in the Summer League that shouldn't be an issue. He gets his shot off faster than just about anyone.
Like Rozier he needs to bulk up and work on his lateral speed. Brad might find him useful against poor ball handlers as he can make a steal or two a game because of his long arms.
Brad has given just about everyone the green light on shooting 3's. RJ may have found his nirvana. Even though his 3 point skills are what Danny acquired him for, his open court skills could win Brad over. Especially if he can get open and consistently connect on mid-range jumpers. He'll have to work on that.