I play Emperor/Standard/Epic with 9 AI civs. I recently removed the starting worker from the AI, and never looked back. Every game has been much more fun to play. The AI still has enough advantages where they are still ahead of me, without it being too difficult for me to catch up. When the AI had a starting worker, I ended up abandoning the majority of my games because there was always a run away or two that I could not compete with. The starting worker gives the AI such a big advantage, it allowed the AI to get so far ahead (to the point where I didn't think the game was fun anymore). With the recent changes to settlers requiring 4 pop and taking 1 pop away after completion, that starting worker gives the AI an even bigger advantage by allowing them to get to that 4 pop faster, putting out more cities, and expanding faster. So I am in favor of removing the starting worker for the AI. Even if the starting worker is not taken out from the AI's starting bonuses by default, I will be editing the game to do just that (thanks to really adv setup mod).