I think I would be ok if they did it in a way that allows you to skip all the fetch and fluff quests and it would give you a buff to your XP rate until like level 50 or maybe even 60. Less appealing, would be skip MSQ altogether. Least appealing would be *DING*, you are now level 70 and have credit for 100% MSQ completion.
I was thinking about the presentation that Yoshi-P did about the downfall of 1.0. On one of the slides, #1 was "Never forget the fans." Which leads to a question, are the fans the group of people who have purchased your product for many years, or are they the people who consider purchasing your product and decide that since there is effort involved, they would rather pass. To me, the answer is simple, the fans are those of us that played 1.0, 2.0, 3.0, single player console Final Fantasy games or whatever. Someone playing WoW or Tera or whatever today and would consider your product if you made it easy for them are NOT your fans.