I would give Ranbir the knowledge to know how to romance.
Kanya to not pick on Ranbir so much and less pride.
Shanta a man of her dreams to keep her occupied.
Bevika a heart.
Shanaya a brain.
Ayaan some masculinity.
Pammi a heart moniter so she knows not to get too overworked up.
Reva some guts.
Aditya some foolproof plan.