As 70% of my flights are intra-TX, the elimination of the 500 mile minimum really leaves me no reason to continue to go out of my way to fly CO. I can earn free domestic flights faster using WN, and can get international tix using point transfers from hotel programs into the airline of my choice.
With new rules, it would take me way too many IAH-AUS segments at actual mileage and only 25% bonus to accumulate any meaningful mileage balance.