The only thing I don't want when it comes to Karan is obsessive lover track and love triangle. Anything except this will be good, and it's to early to say how Keith as an actor is but yesterday he was pretty good, if it continues then I'm ready to watch whatever is coming.
How this character will end? There is no point to disscouse this yet I think, we saw very little. Ruby I agree with you that every person has right for remorse but very few are able to do it. It will depend also on what more he will do. Can you just imagine KN feeling quilt before he got killed? In my pov it would be ridiculous. RV was mad and there is no point in disscousing should he feelt remorse before dying. What I want to say... It won't suit every character to feel remorse and quilt or whatever. In both KN and RV cases the fact that they didn't felt remorse before dying completely fitted in their characters. We need to know more about Karan, we need to see more of what will he do to know if he will be able to accept his quilt, surrender etc..
I think he will somehow become part of Azaadganj and he won't manipulate with Sukor only but with whole village. But that will come slowly, when he gains trust and proves himself as well wishers...