Take for example quests, they are just 'go here, kill this, return to this guy', mostly. E.g. civil war. The daedric quests however seemed to have improved since oblivion. The College and companions seemed unfinished. Winterhold was a matter of laziness, probably because bethesda lack the time to finish winterhold so they decided to chop down the city due to the 'great collapse' and put only 3 or 4 houses there.
Skyrim is simple enough(just look at the journals). It was one major decline from oblivion. And i fear bethesda might screw up TES6 even more than what they did to skyrim. I do hope they take their time for TES6 but i fear they did not really care, since they have all the $ now and that skyrim became so popular they can do whatever they like for the next few games.