Howeer they do it, UACO needs to rebrand one way or the other:

1. First Class
2. BusinessFirst
3. Business
4. Economy Plus
5. Economy

The question becomes what UACO calls the premium cabin on a 2-class intl. flight. Is it "First Class" or "Business?" All harder when there are 3-class on same route, so people get confused between First Class and BusinessFirst.