Oh look another one of these posts.
1 character per account has its reasons. I know it doesnt make sense to most people who want to do everything on their own and not interact with the rest of the game community. But unfortunately that does nothing for the game economy. SV learned one thing from MO1, and that is multiple characters per account just leads to more headaches than it is worth. You have a decent trade system now, where people interact with others in buying and selling goods and skills. Why??? because they cant do everything on one character. You can be self sufficient but you wont be able to get everything you want if you do more complex things like make steel weapons or tungsteel weapons. If you do that you wont have the skill points to make armor and butcher things and extract the ore and refine it. So if you want good ore, you buy it from someone else who mines it. You dont need an alt for that, use the market.
Dont want to leave town to hunt, buy the materials off the market or pay someone to get it for you. Kind of like how a real economy works.
The other issue is alts on the same account lead to more spy characters. Strictly created just to dump in other guilds to spy on them creating more meta game issues again. More trouble then it is worth.
Oh I know, but people can just buy a second account!!!!! Yeah they could, but.... This is money for SV, you are now paying for a second account, and when subscriptions start, a second subscription. Sure you could use it for spying, but again, you are paying real money for it.