We are in exactly the same boat. 
We need the ability to add late fees, that's available in the U.S. but not Canada.

We'd like to be able to have client invoices reviewed before they're sent out.  Also available in the U.S. but not Canada. 

It's freaking frustrating given that the features are clearly already coded, and the features aren't made available.
I'd love a straight answer from intuit on why that is.