On the other hand I don't believe Trains can replace what (for me at least) is true Dominion - with all expansions mixed, varied gameplay because of this, many different mechanics and a new riddle every time you play. Base set of 25 Dominion cards can be played to death, full set of 205 cannot.
I think Vasel has pretty much everything of Dominion you can get. His Dominion-box is HUGE And he loves it... so I'm quite surprised he said that. I will check out Trains immediately