Well put, not everyone needs a fuel system that big, there's plenty of other options that's for sure!Everything is true the StrokeMe has said. There are definitely benefits to the sump, although none of them will apply to me because I don't race nor drive my car daily so keeping fuel in it won't be an issue for me.
I am sure you can purchase a setup from Glenn's where you could run one pump with the pickup style setup. I plan to speak them about this when I upgrade my fuel system.
I was just throwing that option out there for you so you were aware of it. There are so many ways to do a fuel system on your car. Figuring out what works best for your setup and driving style is the hard part!