A variable to make this happen is Al Haj's post purchase services. I hope they do it better, or Proton forces them to be better than what I have heard about FAW V2 under them.
There is Hyundai Aura too. A new category. I'd place Alsvin in it too, but some people disagree because of Alsvin's larger size.
Well a sedan in most cases will have lower mileage than hatchback, and Cultus is a very lightweight hatchback with a very efficient engine.
If one needs a sedan, one'll have Saga as an option and will not be forced to choose from Cultus and Picanto, or look into used cars. Its a really good addition. I now hope Nishat brings Hyundai Aura, or better, honda brings Amaze. More choices = better for us.
If it runs well, used Cultus, WagonR and Picanto prices will almost certainly go down (which are greater than brand new Cultus at this time - ridiculous).