To stay on topic. I kind of suspect there will be a sleeper(s) on the night owl probably all the way to New Port News (NPN). Mileage for those sleepers will be much lower than all other routes although we can expect they will rotate onto the LSL Otherwise a set out at NYP probably not. To really service the present LD trains with V-1 sleepers an additional V-2 sleeper on each train is needed . That will use up all the new V-2 sleepers . Already there is one additional V-2 sleeper on the Silver trains.
The math becomes Silvers 8, Crescent - 4, LSL - 3, OWL - 2 or 4, Cardinal - 2 or 3 if it goes daily . That = 19 or 22 of the new V-2s. Only 3 - 6 spares and 6 - 12 V-1 spares. Not much slack for any spare sleepers. Spares?? NYP 1, WASH - 1, MIA - 1, CHI - 1, Rest in major overhaul.
The closing of the new NYP from 1 - 5 am puts a real damper on a set out that would place 2 part of the time on a platform that as well. + you have the problem of where to park them? NYP is much busier before 0800 now.
One advantage of night owl sleeper to just WASH would give a much better spare sleeper inventory. However until the new VRE parking tracks are completed at WASH. Layover parking tracks are now very scarce at WASH. Then you will have new Acela-2s coming on line probably 3 or 2 additional train sets and maybe more during transition from -1s to -2s..
A better way to increase sleeper availability might be for the Crescent, both silvers, and Cardinal if more than one sleeper to have all of them to cut off 1 ( or maybe 2) at WASH. That would give 4 additional sleepers available for the longer routes based on present LD schedules. There still is the storage problem of the cut offs. If all the above proposals came into being that would mean 7 sleepers at WASH mid day when all the commuter trains terminate at WASH.