On the contrary, I don't think a robust app library dedicated to the watch should be the primary use of the watch. Instead it should function with some sort of logic engine that is setup with your phone. I don't use my watch to look at Facebook, to read articles, or play games. It's something i quickly glance at to tell me what's happening, what's next, and what's in the near future.
I believe that the next OS should have that functionality. The watch face should simply tell the time with with a flick to the screen on the right telling you what's happening immediately including perhaps VIP status updates or major news events based on what you've selected as important on your phone. These are all things that are immediately happening
Another flick to a screen to the right should show what's next, where is your next meeting, are there reminders or to do list items to be completed, this is all stuff that's happening within the next hour.
A third and perhaps final screen should show you the near future, 1-3 days.
We can still use apps by pressing the digital crown, but in my opinion 80% of what we do should be relegated to the first 4 screens I mention above.