Ai are getting "smarter" with newer versions coming out. The last time, it was possible to take on 5 expert bots without breaking a sweat. Now the Ai is harder to take down depending on the level. If it was an expert bot for example in version 6.27 bot, they level twice as fast.

So in the end, you can improve on reaction times when it comes to denying and farming but other than that, no chance of improving anything else.