ORF makes as much sense as a base than TYS, yet TYS is very senior with absolutely no trouble staffing it at all.
There are small niche markets that make great little bases. There are 40-50 people in each seat that would like to live there, are very happy, and have a great quality of life. TYS is like that. ORF would be as well. That is a great town. Virginia Beach and Newport News close by, and you could easily drive in from Richmond or Elizabeth City, NC.
I could easily see people coming to PSA, moving to a place like Virginia Beach, being very happy with a 25 minute drive to work, and enjoying living on the coast.
But PHL will be the good, commutable base that people are looking for.