@Zarok Dai Vesta's quests (which aren't the ones I have right now...!?) bring up another issue: I'd like to suggest that you vary what will and won't be required during any 7-day run, or make sure to offer different options at each subquest for different approaches to the game.
I've gone for a military-free trading and GB-levelling approach, for example. If, in any given 7-day period, there are quests like Vesta mentioned that require large amounts of fighting, I'll
never get a 7-day reward. For one of my first-day quests, I actually had to
build a spearfighter barracks in my Bronze Age city and go hunting for the one sector in my game that that kind of army could manage to defeat. I had absolutely no miliatry buildings in the city up to that point, and I deleted the barracks after the quest was over.
Similarly, if you require certain "boring" types of PvE quests, people like dobruykot will likely never get a 7-day reward.
Yes, there are people who take a more balanced approach who can probably do all of these things, but it's unfair to deny 7-day rewards to people who deliberately choose to ignore or minimize certain aspects of the game.