Last patch had significant AI improvements (at least compared to the state AI was in before). I've mentioned that several times right in this thread. I'm just saying, if they change up the UI, then do you believe they'll make it part of something you have to pay for? Because let's be real - all we've had to pay for so far was bonus content: Scenario's, civs, city states and natural wonders. All others things that have changed since release have been part of the (free) patches. From balance changes to AI improvements.