The more the better.
I like dailies where I can farm specific thing - wheter it's faction rep or unique currency.
I like world events like world bosses spawns, orcs/bandits raiding a city, volcanos eruptions, earthquakes,epidemies, floodings, perfect/bad weathers - which can lead to increased/decreased exp/loot/ingredients gain in certain areas.
I like events that involve direct communication between devs and the rest of community.