CMH is a great airport all around. It is not large, although a 30-40 gate terminal is planned. There are resteraunts all over and you can access them while waiting for an arrival unlie some airports.There is also plenty of parking near the terminal for easy access. The lines are usually not very long except on holidays, then they are packed, and the security is usually pretty quick. The skycaps aren't the best though and I would advise against letting them get your tickets from the counter so you can skip it and go right to the security. There have been times where skycaps get the tickets and don't have boarding pass. Other than that it is a fairly good airport with good food and service, but if you want fast food, there isn't much, most of the resteraunts are normal resteraunts.
Pros: Much Parking, Many resteraunts, Good security
Cons: Poor Skycaps, Can get lost w/o sign, few baggage carosels
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