I've played a game in both sandbox and career mode and want to suggest that the trading A/I be made an option to select in sandbox mode. I found the trading A/I to be quite good in career mode and miss it in playing sandbox. You should be able to turn on the trading A/I in sandbox mode.

Any chance this could be in the next patch?

Would probably have to be a future version.

Whatever you can do would be good. I think it would add a good feature to have.