Yes, they aren't anything stellar, but those old storylines still managed to get me hooked. That's the thing, they're exciting.
Eh, I guess? I mean, really, if you were to isolate the story alone for these games I really don't think you'd have anything all that interesting. The settings, atmosphere, etc. were what kept those games exciting. Some people think the series has lost that, which they're entitled to, but I don't, and sales seem to indicate the majority don't, either.
Sounds like The Familia is another Wesker slash Umbrella. But who knows. I just want to know where the series is going. That's all I ask.
What little we know about The Family is more akin to an Illuminati group than Umbrella, which was basically a large corporation trying to benefit from illegal and dangerous research, or Wesker, who was going solo and trying to transform the world into some kind of giant zombieland or something outrageously dumb. But yeah, it's hard to know for sure based on what little info we have what form they'll end up taking.
I think, storywise, the last two new titles (RE6 and Revelations 2) show a pretty good indication of where the series is headed. I don't know what else you could really want, to be honest. They are going to leave the actual story to the games, not detail them in full in news articles or whatever.
Other stuff like gameplay-wise and such, I would expect that not a lot of change will come to the series. Despite all the hate the current direction gets online, the series still sells better than ever and is, by far, Capcom's most stable franchise outside maybe Monster Hunter, but that game's success mostly comes from one region. I don't expect a lot of shaking of the boat. But Capcom is an odd bird, it's hard to tell with them sometimes.