I thought that this quest series was actually very useful, it taught you how manage worker production and farms production to maximize resource output. Once you get the hang of it you can actually do those quests fairly easily. I would just do it until it got hard, then play some other quests and come back to it later and was usually able to get the next level or two. I never did any one level more than a few times. I thought all the resource gathering quests were helpful to teach you balance.
I thought some of the quests were very hard, but if I came back to them later with better gear and more practice they were easier to complete.
I loved the game, my favorite of the Age series! The pathing and movement sets the bar for what I would like to see us do in 0AD.
I quit playing because working on 0AD was more fun!