You have got it all wrong mate. Sorry for not being elaborate enough.
Like you mentioned the taxes on imported cars. There are taxes on locally assembled cars as well, and what I tried to point out that the tax on a 1.5 ltr engine car would be less than a 1.8 ltr car. That lower tax would help bring down the retail price as compared to if they use a 1.8 ltr engine in the 10th gen. The tax difference might only be few thousand rupees; lets say 50,000, but still that helps bring down the car retail price by Rs. 50,000.
Keeping the same tax pattern, 1.0 ltr car should be much cheaper than a 1.5 ltr engine car and also 1.3 ltr engine car.
FYI, I am referring to the same car with different engines. I am not comparing a car from one category to another.
There is only $1160 difference between base EX model with CVT and 2.0NA engine, and the base EX-T model with CVT and 1.5T engine. Most people see the price difference and just assume it's because of the 1.5T engine. It's not just that, EX-T offers a lot more.
17 inch alloys compared to 16 inch on EX
Dual-Zone Automatic Climate Control System
Heated Front Seats
Just the engine upgrade would only add $300-500 max, and that is my point; 1.5T only costs few hundred dollar more than the 2.0NA, and those few hundred dollars could be covered by what we expect to save on taxes being a smaller engine.
This conclusion backs up a report that came out many months ago claiming Honda Atlas would introduce the new model at same existing price of outgoing 9th gen.
So in my opinion based on all what I have said above, there is a good chance that we get 1.5T as standard at the same existing prices of 9th gen.