Atleast the dealer didnt offer me any with my Swift.
Since you are in Bangalore, humidity is mot as much of a concern for you. Car chassis do get a phospating bath- it is what they call factory rust proofing. I know a lot of cars manage without aftermarket rust-proofing. After my experience with rust on my old Wagon R (when I bought it used, the metal holding the rear axle was so bad it was folding like paper) I decided to get rust-proofing done. If for nothing, it will get me better resale value. Again top coat (what they call polish or teflon or cleat coat) is also not necessary but it really makes your car shine. It also helps if you have a light scrub as only the top coat is damaged and can be easily patched
If you do some highway driving, get better headlights installed. I transfered the 90/100 bulbs & cutout relay from my Wagon R as I had just bought them. I never need high beams even on the highway. But its good to know they are there, especially if you drive late at night. I decided not to mess with projector headlights, DRL, leds and stuff
Do get the reverse parking system with camera installed. The Ritz has a tall back and rear visibility is a problem. The MGA rear view mirror display will seem small as compared to after market ones but its quite adequate once you get the hang of it
Just had door visors installed today. Your call
The showroom will also offer rear spoiler. Again your call. Makes the Swift, atleast, look sporty. I didnt buy it.
I didnt go for any graphics at all. The car just looks elegant without them. But some do want them installed
Some shops may suggest windshield film. Not legal (though may not be noticeable) and you definately wont require it in Bangalore
Go for good leatherite seat covers. They do take a lot of beating and stock cloth covers are difficult to clean
Look for a boot light
Since you are buying a top end car, your car will come with all the stuff. Dont buy any speakers for now. The stock speakers are basic but your mind will be too busy driving to appreciate them
Put a large "L' on your front and back windshields and drive peacefully. Let anyone who is in an hurry pass and above all, resist the urge to race in your new car- believe me, its very easy to do that. Coming from my Wagon R, doing 40 in 2nd gear was quite common in the first few days after I got my Swift
You dont really need to get everything done from that list. You asked for a list and I gave you one