One thing worth looking at is whether one can get some more day trains along the A Line in the Carolinas. I've driven I-95 through there and despite the fact that the cities aren't large, the traffic is horrendous. Also, when I ride the Palmetto from Savannah, there's a lot people getting on at Florence, Fayetteville, Selma-Smithfield, Wilson, Rocky Mount, etc. There might be some benefit for a state-funded trains from Florence to Richmond or Washington, or from Florence to Raleigh or even Charlotte. Maybe the State of North Carolina might not be hot about funding a train that terminates in South Carolina, but I'm not sure that the tracks at Fayetteville would support storing or turning a train. Anyway, North Carolina already pays for the Carolinian that serves Richmond, Washington, and the NEC, so maybe they won't mind.
Another thing that would be worthwhile would be to provide service to Columbia, SC (it is their state capitol) that doesn't call in the middle of the night. Maybe a Raleigh - Columbia - Savannah day train and also a Columbia - Charleston train.