As far as the data shows, KG at the 5 is our best lineup.
You can have KG at the 5 and full of bench players and we will still outscore our opponents. (See 82games.com)
As far as I am concerned, starting and playing Collins was a move of desperation.
If I was the head coach starting the season, I would have just kept the starting lineup the same until Bradley came back.
This way you would have had Jet get accustomed to running our sets as the 6th man as he was intended to be.
And the only real tinkering you would have had to make was Courtney Lee off the bench.
The rest of the other bench players would "work themselves out".
Sometimes, making changes for the sake of change isn't necessary.
Sometimes, you just have to give it time. Time to grow, time to learn, time to adapt to new situations.