Sorry for another wall of text.
First, I think the ephors should focus on updating the guide to include newer features (e.g. political units, new ways of earning dominion points), or other features that are not in the guide (e.g. hidden paths). They could mention the Wheel of Fortune and give a list of possible discounts.
Second, they should work on transparency for multiple issues. I recommend emphasizing the importance of the acropolis's protection. The current wording makes it sound bad for a player to hide his units and have them be "unable to participate in your city's defense". When I was a new player, I questioned the value of leaving my city open to every raid when I had defensive units available, which sounded great for defense. Also, it is unclear on how fortifications actually work. Are they a flat defensive bonus or does it provide a percentage bonus to each defensive unit? If so, what exactly is that value? 1% for every 1000 city defense? The wording makes it sound like an individual bonus to all defensive units, but the indicator for city defense makes it look like a flat bonus for the city's total defense.
Add a note to the agreements section that each agreement also requires the agreements before it. I have seen far too many players spend their first 200 GPs on Sparta articles when they have not unlocked Argos, regardless of the warning that pops up when trying to buy those articles. This also applies to the other articles, but it is more of a visual problem with the agreements screen than it is a guide issue.
Add screenshots of rewards for the global quest and all level brackets for the PVP quest. This should give players an idea of whether or not they should focus on leveling and moving to the next bracket, or toning down their experience gain. The differences in point thresholds are dramatic between masters and experts. An unprepared player who does a lot of divine quests can easily find himself in the expert bracket without a suitable army to reach the 35K points required for the best reward or even the 8K points for the intermediate reward. This is a huge, unexpected jump from the 12k required in masters. Also mention that PVP quests start every Friday and global quests begin approximately every 4 weeks.
Third, there could be an advanced tab regarding certain techniques or procedures.
Strongly advise players to pull their offensive forces from a colony after they take one and mention that colonies are visible to all nearby players with a tholos.
Explain the weekly 50k cap for raiding cities. Possibly include the raiding trick (or mention the existence of such secrets). Also mention that players can only send articles or resources to their friends twice a day.
I think the guide should contain basic information for new players, with the inclusion of in-depth information for experienced players (especially the PVP quest reward brackets).