Let me decipher pictures:
Roof atena, ORVM's, door handles, front fog lamps, real high mounted stop light are straight lift from Figo/Fiesta classic and new fiesta.
Comparison with Duster and Ecosports: Purely on looks basis not driven yet
Front quarter glass will add to convinience and more green house however this is missing on Duster
Rear over hand is considerablly shorter in ES than the Duster. Duster has bigger boot than ES (length of ES is sub 4 meter without tail gate mounted spare wheel)
Bonnet in ES is shoter than Duster. Design of windshield will reduce the drage co-efficient but might compromise on front view (will depent on the mounting of dash and seat height adjustment)
Front lights: ES, if not equipped with projector headlamps, might offer poor light (example Figo with smaller reflectors have really poor throw), which not the case in duster.
Rear quarter glass is smaller in ES and integrated with rear windsheld. IMO
this is much better than the Duster.
Rear end design pose striking similarity with BMW X5 (correct me if I am wrong), some inspiration from Fortuner as well.
Overall exterior design is superior to the DUster but lets see how ford tune engine, internal space management and plastic quality, and fit and finish etc.
If priced correctly, ES will definitely be a big hit. I am owner of Figo, seen the built quality, metal used are superior to the likes of Swift, Liva etc. In the end it boils down to Price.