About look alike
They had it before 10 years leap. Before it was revealed that the girl was Chakor's twin sister it was classical look alike track. If they bring Chakor's look a like loyal Udaan audience and even new who heard about old track will start to connect look alike with Chuni. It can be good if they bring back Chuni, but illogical too. KN killed Chuni the scene didn't left open possibilities. And there was witness to it, one of villagers. So for me all indicated that she was really dead but they didn't bothered to show her last rituals coz the show must go on and they had track with real Chakor on their way.
If it's Suraj's look alike... I don't know how can that be good for VJ. He played so many shades of Suraj that new look a like would be like repeating one of this periods. They already have hectic schedules, bringing one more character to play which will not have much new to offer will be only exhausting and unnecessary complicated.
If its KN look alike... it can be interesting to watch Sai Ballal playing on good side with Sukor. But there are secrets KN and Imli shared during Banaras track that no one else knew like for example drugging Vivaan or Ranjanas death. Look alike would keep story moving for some time but once Imli finds truth everything would be on square one. Sometimes I think that even if real KN comes back nothing will happen to her.
Now... you can agree or disagree with what I wrote above but with what I will write below you must agree.
We know whom makers love the most. We all know who was praised in hmm some articles and posts for playing positive and negative role in Udaan (Apart VJ). We also noticed makers visit our forum. Maybe we should be careful with discussing things like this. We will give them idea and if not now then maybe in future they will combine our ideas with their likes and we will, God forbid it, get Imli's look alike.