I think you're quite wrong there. BP2 was as ambitious a campaign as we could imagine, and it went from first failed concept to fully rebuilt campaign in about 18 months.
Now granted, a lot of that is down to the BP team being very, very good at what they do, but it's helped by the fact that we had a very clear vision of what we wanted to accomplish, and a great deal of discipline regarding new assets and new ideas.
I should also point out that projects like BWO, NTV or Scroll of Athahardtospellword have, simply due to their age, suffered from a great deal of personnel rotation, which is the reason why they're not released yet. I do not know why they had these issues, but it's one reason why the BP team is trying very hard to only do stuff that we know can be done in a reasonable timeframe.
I guess what I'm trying to say is, if you commit to a long-term project, be clear about your priorities, and be conscious of your abilities (and, of course, don't be afraid to ask for help). Don't say "This will be doomed!", that's a sure way to a self-fulfilling prophecy. Make a list of what you need to have and what you want to have, and then look for people who can help you get these things, in exactly that order.