I have not read quite a few updates - maybe some other members may have a similar train of thought as mine. What I feel is that if the serial is going to continue beyond a year they may strech this track(Aditya-Kaajal) and may meander into a few others tracks as well.
We may see a story develop between Kaj and Adi and the writer may decide that they get married. Merely, because Adi is living in a small town or village - the ppl in Bhadrapur are not modern as they would be in metros like Mumbai, Delhi etc. And, since she already thinks that she is his wife: they may decide to get them married!!! Adi's sister meanwhile brings another dimension and for some reason I think though Dev may not want this - he may because of pressure from his family (Panna chachi) may have to get engaged or married to this new entity(Adi's sister). Somehow, I think they may show some connection between the Singh's and Grewal's either a business or a inter-family connection either to Panna-chachi's mayka or Nandini's mayka. Additionally, wasn't Adi's sister mentioning her mom wanting to ger her married to a business tycoon. Maybe that could be Dev Pratap Singh!!! Girls, Dev deewani's do not get angry at this prediction.
I am only penning my thoughts since they drag these serials. Anyways, other aspect is that Adi may have for either career or business or for that matter some past love affair not gotten married. But, he also may get pressured because now - Kaj is living in his house w/o a chaperone and hence to bacchao her reputation may forced to get married to her. Plus, Satya, would prefer to have Adi as a SIL rather than DPS - we all know why!!!! Uski galat faimi door karna ab mushkil ho jaayega. And before Kaajal can remember anything they may enact the marraige scene with Adi. Now, after all this is a SOAP, always always remember this foremost.
Then, after the shaadi they can bring back Kaajal's memory and then either show a negative Adi or show Adi in an accident or Adi having a terminal illness and passing away. As far as DPS is concerned he may either get married/engaged to Adi's sister and then they can show either a quick divorce or for that matter Adi's sister (if she is Mrs DPS) inviting Kaajal (her bhabhi) to live with her in the Singh mansion OR they can also show Adi's sister leaving DPS and going back to USA a la Dhruv!!! The writer may bring DPS and Kaju back and then again some other drama continues.....GUYS depends on how long the serial will run for a year or more..Plus we should also know if Apu intends to continue with the serial. Because, if he leaves this show then they have to close shop. More than Surveen its Apurva who attracts viewers like all of us from all over the world. At the moment, all we can hope is the serial is salvaged and we get to see DK romance in a few weeks....Yaar yeh writers ko kucch toh acchi samajh honi chahhiye - since the serial started on Oct 9th, 2006 - Dev aur Kaajal ka kucch tagda sa romance nahi hain😕😕 Hum log toh romance ke intezaar mein aankhein bichaaye hain. Arrrrey Sony walon kucch toh zhalak dikhao naa......Chahiye humein sirf romance romance, kuch kuch naukh, zhonkh, ab bas bhi karo bahot rona-dhona gussa dikha diya. Ab toh ishq ka mausam le aao Kaajal or Dev ki raahon mein.......😳.......Issi Asha Mein Hoon.