Re: Impact of magic on everyday life
In a typical fantasy village, the first improvements would be in the crucial areas, such as crops, healing, water, shelter (inc. warmth), hunting and defense. Assuming a single mage per average village, and regular mana levels, I don't see the mage having time for much more than this. The primary efforts would focus on prevention of disaster- precognition to avoid the effects of a bad flood, ensuring the crops were good, the sick were healed, and so forth. After that, they'd see what they could to boost things, boosting crops, fortifying defenses maybe, and so forth. That's how I see it, anyway.
An interesting scenario might be if the village spellcaster died before he could train his or her replacement, and the village wants the PCs to find a replacement- or they want the PC mage to BE the replacement, and resort to some kind of coercion to attempt forcing it.