Passing Favored nodes intention is to place replica among the favored node
Current behavior in Node group is
If favored node is not available it goes to one among favored nodegroup.
Instead of returning 5 targets on 3rd step above , we can return 2 good favored nodes as target
And remaining 1 needed replica can be chosen from Random node of bad FavoredNodes's nodegroup.
This will make sure that the FavoredNodes are given priority.