The trade balance bar is too restrictive.
There have been multiple occasions recently where a trade was not allowed to go through because the AI deemed it too unbalanced. In both cases, both owners were in agreement that they wanted the trade.
One example had the bar all the way in my favor, but I thought it was a fair trade. The other was the opposite.
In my opinion, these restraints need to be turned way down. It's very frustrating when both teams want to make a trade, only to have the AI tell us we can't.