no you are not missing anything you are right on. The plan is to make a Swiss Army Knife type site of web tools for webmasters. But you know about plans...
from www.DomainParkingGuru.com "Domain parking is a great way to make money on otherwise lost traffic. We all have more ideas than we have time. We buy more domains than we have time to develop and sell quickly.
You should not lose money on your domains. Not a single day. Each domain has a lifespan and you need to capitalize on the potential of your domains every single day they are in your posession. Domain parking is never wrong but sometimes there are better options. No domain should live a day without being parked.