Yes, Wagon R could have been much better.
1. Specifically the 13/145-80 tyres could have been changed to 14/175-70.
2. Safety features like ABS, EBD Airbags to be a standard across all variants.
3. A heavy lag while in traffic conditions. A powerful 1197 cc engine could have been the booster.
4. Better plastic quality could have added the flair.
5. 1495mm width makes could be increased beyond 1600.
6. CNG tank of 60ltr not sufficient. Maruti should plant a bigger CNG so that a minimum of 300 km can driven at one go.