You could very well do that. Honestly, I don’t have a huge issue with that option. My suggestion was just a way to stop the bots from invading and spamming the non-trading servers. Honestly, I’d be fine with having trading non-trading characters on one account. This was just a way to make it more difficult and costly to do what they do.
With that being said, I know absolutely nothing about how hard implementing something like this would be. I’d personally go on the non-trading version of the servers IF this was a thing, solely to avoid them. This is my last hot-take, I’m not going to make any more stupid posts before experiencing the actual game and seeing how everything works.