Okay, I don't want Skyrim turning into DA when it comes to the MQ, that would be a terrible idea (In my opinion.)
What I'm saying is that the final ending where you get to stop Alduin should always be the same, we are talking about Lore here.
Sure, I don't mind some subtle changes/variables in the MQ, but not too much where it comes to a point where there seems to be multiple MQs, which doesn't make sense in my book.
Oh, and since when is the MQ a replayable factor? It never was before, why should it be now? You have guilds for that reason, and I even stated that I'd love to see drastic changes that you can make when doing the Factions quest line. You can also make new characters, follow new play styles, RP, etc. Bethesda shouldn't take the time to put in a bunch of variables into the MQ for your replay factor, when there already is a bunch of stuff to do that can cause you to replay the game a lot.
What I'm saying is this;
MQ - Minor changes/variables
Factions - Major changes/variables
i didn't say multiple endings? what i was portraying was a single main quest with variables that would not cause it to stray from the intended storyline path. like when you choose who lives and who dies at certain points, as long as they still provide the same quests(minor differences maybe), it can essentially still lead to the same ending. it's a matter of which npc you like more?
and we know how vague bethesda is when it concerns the lore about our characters. in the next installment, they would just make a book highlighting certain key points of the main quest we followed, giving absolutely NO other details what about we did except the start, some key parts of the MQ(that would not change) and the result of the final battle.
and when you mention the concern of time, there's the radiant storytelling now. if the npc you choose to let die is part of a quest chain, just set the path to go on with another npc like the one you let live?
and once more, quoting several others, TES is a RPG. What is an RPG is we can't shape our stories?