My friend, sorry to burst your bubble, but 6 to 7 lacs loss ?? Are you kidding me. This is not an off road vehicle we are talking about. Please don't over exaggerate the figures. I am sure you are not the only one who has kept and sold a top of the line corolla we all have our experiences.
The resale depends on numerous things like mechanical condition, exterior/ interior condition, mileage, drivetrains and condition of the paint.
And when you say that Honda has a better resale value, do you really think someone is going to pay you an extra dime for all the extra add-ons (Approx. 1 lac of worth) you are stuffing your civic with (Just to make it look appropriate), so where do you stand in terms of resale then ??