Keep in mind I see after a certain amount of content as a new game, this is why I keep bringing up games in a series. So I do think it is fair to see having to do 100+ hours of content you dont want to do to get to the expansion you did as a fair vision of an accessibility issue. Like Rokke said he came to this game to do the dragon content and had to trudge through ARR to get it.
The longer we go the bigger the time requirement of course. Also I'm not thinking of an accelerated start to drop people at end game but to put them at the gates of fairly new stuff that they were getting into the game for like Rokke's story (so they avoid say 100 hours of msq but still have some more related to their interest hours to go till end game). Again to me I shouldn't have to play warcraft 2 to get into warcraft 3, and I see at a certain point FFXIV should be seen in units like that because it's too freaking big otherwise lol. If you want wc3 then you should have to invest in wc3, that doesn't require investing wc2 though.