My personal 2 cents. I think the reason Shyam was bought in was to close his chapter and move onto the next level of the story ie; past. That is the reason I feel from the past 1 week the track is going in Fast Forward mode. I think by the end of the Shyam track, we will know that Shyam is a blast from past. There should be bigger reason for Shyam to be that evil, it is not just about lusting about Khushi, or Arnav's wealth or his revenge for his insult. That is the reason the re-marriage track is happening with a simple wedding because they can't get Garima in without the past exploding.
I was actually very put off with the Shyam entering track but I am really happy to see that the track is not being dragged. Had it been other serials we would be still seeing Poojali crying in the hospital and everyone else crowding around her. I remember in Yeh RIshta when Akshara loses her first baby, there was drama for about 2 weeks and can you believe it they also had promo about it. So compared to other shows I am happy they are just fast forwarding this track. And personally I am happy that now there are only 2 tracks that are playing out right now, re-marriage and Shyam re-entering. Garima is now on slow burner and her truth is not going to be out until Shyam is out of the picture.
The reason the track is not working for many is because they feel Shyam is spoiling the remarriage track but actually this week has been better paced compared to the date week or the Anjali hide and seek week. And we got to admit they need to establish the blind trust before the rude waking hsa to set in for Anjali. So we need to take this with a pinch of salt.