You are right, I still have to see the 3rd GEN Belta/Platz, VITZ Lift back, But VIOS is particularly an Asian spec car designed in Thailand/Malaysia/Indonesian countries, Probably because a lower spec Corolla wasn't offered in these countries (including India where only Corolla Altis 1.8L is sold).
for the indian market i dont know why Vitz/Yaris wasnt offered and they came up with ETIOS currently ETIOS is only sold in India and Indonesia, the ETIOS Liftback is only sold in India.
For India as well as relived by @nickatnite Toyota India has plans for Yaris/VIOS in future.
for the Pakistani market there is space for a mid sized or subcompact sedan i suppose, like Vios and SwiftDzire and or the Honda Brio Sedan.
that's why i say an ideal replacement for Paksuzukis Cultus would be the Swift Dzire not a Celerio or a WagonR.
and btw Indus motors have Yaris planed for 2nd-3rd Quater 2015. Vios is only on the wishlist. Which might take another year or end plans
as earlier posted on this thread that indus motors had imported a Brio for internal testing and comparision their might be insights of Honda working on Brio/Brio sedan and as hinted by Paksuzuki that they plan a Swift Dzire in future.
Vios can be a killer to SwiftDzire and Brio Sedan, By only having the toyota reliability.