Of course not. Remember, US supposedly had a revenue based program ready to go, but shelved it when they started their merger efforts. Now they're focused on merging successfully and aren't thinking about this right now, once the merger is settled, if they think they can make more $$ by going revenue based, they'll do it in a heartbeat. OTOH, if they think they can make more $$ by keeping it the way it is, they'll do that. The only guarantee is that they will do what will make them the most $$, and they won't care too much if we like it or not.