Not a good decision. These additions would not cost much in the aftermarket plus they are READILY available (except the floor mats). The additions are not that substantial to cause a stir in the market. But, Terrano and Duster are enjoying monopoly in their segments due to lack of worthy competitors.
Prospective buyers might be interested in this as the additions are merely cosmetic (very much preferred in the Indian market) but not a necessity. Anyway, its always good to launch limited editions to boost the sales. The sales charts will tell.