WoW has so many ongoing storylines that it's hard to keep track of them all. Occasionally, they blend and merge, and sometimes they simply drift off without any sort of resolution. Sometimes we can get all caught up in the story and then abruptly it's gone. Sometimes storylines are resolved in books and unless you make a point of reading the novels or the comics you have no way of knowing what eventually happened, unless you can find some random NPC who will drop hints.
I've never managed to pull off Loremaster, so I've missed the ends of lots of storylines. I do always perk up a bit when I hear bits about the Old Gods. This particular storyline is fascinating to me, and it always just seems to show up in hints and winks, with occasionally an Old God turning up as a big boss. I know I would like to see more happening with these guys, like the sneaky little voice that show up sometimes with archaeology.
What about you? Are there any stories that petered out that you want to hear the end of? Do you like catching the beginning of the story and filling in the blanks in the Caverns of Time? Do you hope other old stories get revived?