I was avoiding playing, because I'd cheat. I'd declare that we were going to do New York - Chicago High Speed Rail via Detroit and Fort Wayne, and I'd call that a "corridor" rather than a long-distance train. After all the 750-mile rule is gone in this fantasy, right?
The LSL would be replaced with Chicago-Detroit-Toledo-Cleveland-Buffalo-Rochester-Syracuse-Albany-NY service, running end-to-end at least twice a day with additional trains covering portions of the corridor. Connecting corridor trains to Boston would run at least twice a day.
The Capitol Limited would be replaced with Chicago-Fort Wayne-Toledo-Cleveland-Akron (or Youngstown)-Pittsburgh-Philadelphia-NY trains, running at least once a day all through and more on shorter parts of the corridor; with synchronization from Toledo to Cleveland. Connecting corridor trains from Pittsburgh to DC would run at least once a day.
The 3C corridor would be implemented to connect Columbus and Cincy. Cleveland would become a hub with dozens of trains in all directions.
I designate Chicago-Indianapolis-Cincinatti a "corridor" too, and Cincinnati-Charlottesville VA-DC, so that's the Cardinal route taken care of.
I designate DC-New Orleans a "high speed corridor" and also DC-Florida, with many trains per day on each route, so that's the Silvers and Crescent dealt with.
These routes would include a network "NightJet" overnight corridor sleeper trains, designed for "get on in the evening, off in the morning", and the NEC would get those too. These would allow easy overnights from any Northeast destination to anything from Toledo west.
By designating these as corridors, I removed seven "long-distance" trains while massively increasing service (massively! Billions of dollars massively!) on all routes. Look! Less than ten long-distance trains, and all I had to do was reclassify the single-overnight trains in the east as corridor trains!