I would also prefer a connection between Charlotte and Columbia. Concerning the Raleigh-connection, the map I found was not that clear. If I interpreted the expansion map correctly, the plan may be to go to Henderson, NC. Soon further northwards, the line ceases to exist according to my geo portal. Perhaps the goal is to built a completely new line to South Hill, VA - Petersburg, VA?
By the way, which of these new routes which offer more connectivity between existing routes would you put most emphasis to get passenger railway back?
For me, I would go for the Cleveland-Cincinnati connection because it would connect three large cities which are not so far away from each other. Cincinnati really should get more options to be reached by rail. The Toledo-Detroit route is perhaps even more a must as the gap between is that small and Detroit could get a direct railway connection to Cleveland again. Those two would probably be my first priorities.
To bring back to the Michigan Central Station in Detroit would also be amazing, not just because of nostalgia of this impressive station, but to get a direct railway connection to Canada again. Oklahoma City to Newton would also be nice to connect OKC with the Southwest Chief. Atlanta to Savannah is also almost a must for me - to bring Atlanta closer to Jacksonville and Florida. A direct Houston-Dallas-connection would also be interesting.
If the money isn't enough to go for every of the proposed improvements, for which would you and others here in the forum go?