Bruce, even though the year requirement was required for you, there presently is still no guarantee that the data the person provided would meet your category requirement. If they typed 2007 as the construction year it would pass the required test, but still wouldn't qualify. No matter what, you will still have to check over that variable in order to determine whether that church qualifies.
We understand that some categories still require certain data to be legitimately considered for that category, such as your Old Church example. But we think these types of variables are few and far between, and also do not have a problem with category groups enforcing these kinds of rules in their approval process.