I also love train travel, took a trip from L.A. to Portland once and it was great but it was almost two days... not that I minded, it was a vacation trip and it was more about the experience than getting there quick. Also did L.A. to L.V. and it took around eight hours (compared to four or five hour drive)... they have been talking about a bullet train to Las Vegas for over a decade.
I would love to see a bullet train up the west coast but I don't think enough traffic to pay for it. He11 I would like to see a regularly scheduled luxury train up and down the coast.
What I would
REALLY like to see is more light rail in Los Angeles

Boston spoiled me... travel anywhere in town for seventy five cents.
Did you know that there was supposed to be train tracks running along PCH? S. Cal could have had light rail from Santa Monica to San Diego but noooooo the automobile was the wave of the future.