wpegg: Yes, I really am a software developer (business applications, current WPF, and general .NET), have been for 10 years now, and I know that there are always bugs. I was just trying to generally articulate that feature creep, while the features are welcome, is a classic way to overwhelm a project. Not only do you end up with more opportunities for bugs, but if you've underestimated the volume by a percentage amount, then the actual volume becomes far greater because there's far more content.
Sure, in game development it's not only a risk but a reality. There are always more cool things that you would want to put in, and if a developer does not find a way to deal with it, they are not going to make it far. There are even more things that make developing a game more risky than the average software project -- not only is it usually a highly complex and advanced multimedia product, but it also tends to attract people who are more talented than average and can have egos to match. That is why game development is inherently a very risky thing and why people should (at least on Kickstarter) place their bets on people who have already produced something, whether it's a game or a demo or even a prototype.
That said, InXile has decades of experience. I think we can trust them to not screw up the scope when they enter pre-production. Furthermore, they have an additional 200K donated by Fargo and Dengler that does not count towards the Kickstarter goals, not to mention potential money from Wasteland 2 sales.