You take that back!!
In what aspect do you think they're getting too ambitious? Yeah, its definitely ambitious, but the fundamental building blocks are there, its all achievable. Whether it all gels together into the game its going to be unknown, but i've been satisfied (blown away, mostly) with what they've shown, you can tell by the way they talk about things and the importance of communicating with their community and using their feedback (good and bad) to shape things, there hasnt been something thats made be concerned things are going pair shaped. Nothing to say it wont either, but they're jumping the obvious early hurdles (planetside landing is a pretty good example) and showing now warning signs that its all talk.
Still a long, long way to go though.
@Dave
I'll be going. Relatively easy to get to it too, considering i dont drive.