I think the reason why KS is behind Saath Phere and Beetiyan in ZEE is because they move at a faster pace and one issue is solved before they jump to another!
Saying this, I don't think No 6 and 7 on the TRP list is because of JB not being together. It is in anticipation of revenge, involving AD and JW, and the hope that JB do meet even if it is to throttle each other's necks. But if this is dragged, as is the problem with KS as usual, then the TRPs are going to fall again. I'm sure, pre-leap, whenever there was no dragging, the TRPs have been good for KS.
A lot of us want JB together and in this revenge drama, if they can be brought together even as opponents, all the more better as their hate relationship was as charming if not more than their love relationship. But all depends on the creatives, if they just show random JB scenes, then there's really no use. What they have to show is the JB scenes which we had at the beginning, where the JB scenes would move the story forward and not just be a part of the scenery.