I agree with the concerns brought up by Thim and Untrustedlife, but at the same time I see the utility in having a better structured AI system to make it easier to understand and extend.
Now’s basically as good as time as any to overhaul the AI as no one else is working on it so there won’t be any merge conflicts. Though, the AI changes should be finished within a month to give playtesting and code review enough time before the next release so that there’s time for multiple rounds of tweaks to the AI, because it’s an important system to have working correctly so that the next release won’t end up being worse off.