I would say, Ciaz is a good, value for money car, and much better than City in all respects (other than resale).
I do not think, it's normal. If you would be interested in going for Ciaz, buy it on booking, instead of immediately buying from market / showroom. You might have to wait for some time, but hopefully, you might get freshly imported unit, free from any such issues.
You can also press the sales person / booking person that you will check and confirm that whether it has been imported after booking date, or before it. If before booking date, you will not accept the car.
If its current price is 23 lac PKR, then after driving for 02 years, you might be able to easily sell it for 18-19 lac PKR / more, provided your vehicle is in top notch condition, 100% non-accidental, and fully-maintained.
I do not think, it will impact much, and I do not think that it is getting discontinued any time soon.
I think, YES! But you may first confirm. Installing any / all such items in even Honda and Toyota might also void warranty.
Yes, they will be available, but not necessarily in 07 days time frame.
I hope it helps. Thank you.