Interesting angle! Maasi's was a love marriage- did Savvy say whether hers was love/arranged? When Dadi keeps saying "tere jaise aayi thi" to Ishqi, I thought it hinted that the Savvy marriage was a love one.
Both essentially destroyed by alcoholic husbands, which you could say, Ahaan could very well become. The difference probably though is of mindset and empathy- Ahaan appears to have a lot of the latter, and empathetic folks tend to be somewhat sorted & generally don't indulge in violence.
But if savitri's angle would not have been introduced and as Ahaan cam drunk during Ishqi's mooh dikhai chachiji always feared tht he might turn out like his dad. And in future dadi might have instigated Ahaan and encouraged his drinking habit it could have a source of big crack intheir relationship and Ahaan might have become like his father not violent but also just cared for family and not for ishqi