I was a TMC for a few years till about 8 years ago. It's a shame they've removed the Maharaja image from "The Maharaja Club", but the new card design does look very nice. I also noticed the unnecessary SBI shilling on the welcome letter.
Overall though, this isn't like SQ's PPS or UA's GS. 75k miles shouldn't warrant any extra special treatment and nor does AI make that kind of promise. The only thing AI had stated at that time was "Special/exclusive invitations & offers" or something to that effect that nobody ever got. The first AI "offer" I received was a few months ago for some discount to buy Adidas shoes!