ULA has helpful graphics... I'm going to link to the actual article too.
http://urbanize.la/post/metro-consid...nta-ana-branch
So Downtown NIMBY is resisting elevated Alameda alignment options, which means Metro is going to look into ending the line to 5th/Flower (or 4th/Flower?) where the "missing" Expo/Blue line station would have been located. I take that to mean that if Downtown Transit Core #1 (black line) is chosen, Metro will have to build a transfer station at 5th/Flower instead of just a terminal station. One minor quibble... No transfer station to Red/Purple line at Pershing Square - although not that hard to envision an extra stop near 5th/Hill.
The geometry of ending the line at 5th/Flower also sets up nicely for further extension of this line towards West LA or Northeast LA. I can see three equally good option of extending the line:
1. From 5th/Flower, head west across 110 freeway, then turn southwest towards Pico Union, and then west on Pico Blvd towards Mid City, then on Venice Blvd to Venice Beach.
2. From 5th/Flower, head west across 110 freeway, then turn northwest towards Echo Park, then Sunset Blvd thru Silver Lake, and then Santa Monica Blvd to Hollywood and beyond (Century City perhaps?)
3. From 5th/Flower, head west across 110 freeway, then turn northwest towards Echo Park, then Alvarado St/Glendale Blvd to Atwater Village and Downtown Glendale.
So if you can't tell already, I like the idea of ending the line at Financial District about 1000 times better than Union Station. It is one of those times that NIMBY intransigence is going to give us a better outcome... (!)