So, I've been playing a character whose general purpose was to NOT be an adventurer, with the exception of the Main Quest (Mannimarco).
However, I've noticed at several points that I'm getting spoilers for quests I haven't done yet. For instance, the storyline ends with The Prophet suggesting I should go help the leaders of the factions in their assault on Coldharbour... except that I've had no dealings with any of them.
I also noticed that many area quests are available before prior quests are done. For instance, I was heading across Deshaan to meet Tharn at one point, and did not do anything about the Plague... yet I was offered quests that talked about the causes of the plague... even the FINAL step in that story... without ever having started it.
I don't know how much works would be involved in this, but I strongly suggest quests like this ONLY be offered AFTER the previous story quests are completed.
It's not a huge deal to me, having done it all before, but newer players experiencing the stories for the first time might have their play ruined by having a quest offered to them too early.
Exploring Tamriel since 1994.