Direct launcher (for LEO or the Moon)
A solution to a number of costs problems: one kind of launcher to perform all the CEV missions:Direct launcher.
This would mean more payload to the ISS once the shuttle is definitely grounded, more cargo to it too....and it would mean 2 LEO rendez-vous (one between the CEV and the LSAM launched together and that stack with a separately launched EDS) before TLI.