Now out of IND after a move from CVG. I have found the best MRs the past few weeks to include SEA but many worthwhile trips can be found out of IND. You just have to connect to a city with a larger Delta presence (DTW, CVG, JFK, ATL, MSP) to "take off" on the mileage run's longer legs.
Feel free to get ahold of me if you would like to discuss.