One of our users likes to see a print preview by default in Numbers. This was available in the older version of Numbers, but it’s gone from the newer version of Numbers.
Unfortunately, the most viable solution for this is just to keep using the old version of Numbers.
If you’re complaining about this issue, you likely already have the older version of Numbers. It will appear in the /Applications/iWork ’09. If you don’t have it, you also likely don’t have this issue (because you’re used to using only the new version of Numbers).