No worries man as this is what a discussion group is for really. I'm sure everyone has their reasons, but well, here's my take on your questions as I asked the same when I was thinking of which car to get:
1) Value for money, bang for the buck. I tested the Honda Civic. Love it, but it just feels plastic and you really are not getting what you paid for. Safety wise, K3 is leaps and bounds ahead, and you get a whole lot more metal for that price (hence the weight). The only thing that the Civic had as far as I was concerned was the much better implemented gearbox. The Altis, 3/3 gave me the same reaction. Throwback to the 70s, wrapped in a 21st century shell.
2) Yes, but hopefully that will change.
3) Maintenance for any boutique brand car (or what I would classify as a car company/manufacturer that does not move a lot of product in the country in question) will always be higher somewhat compared to mainstream brands. For Korean cars, due to their high dependence on sensors, the cost will go up slightly for replacement of these sensors should they fail, and it does take a person with good knowledge of the car to troubleshoot these sensor problems (hence the higher manpower cost associated with the activity)
4) In so far, the FC is pretty decent depending on how you drive. My average currently after sorting out all my issues is about 570 KM/tank, giving me nearly 13 days between visits to the pump. Driving style 50/50 city/highway.
I think the real issue is only no.3 (at least from my personal experience).