Well, perhaps not die, but it's fun to vote anyway! I like Concept III. Still room to sit for the elderly or handicapped, but much easier access to the train. Just add in some swell video monitors with notifications about the station and direction of train (in Kanji, Katakana, and Romanji of course) and it'll feel just like Tokyo.

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Well, perhaps it will take more than that, but DC metro does have more seats than any other commuter train system I've ever ridden on.

Props to the Persian Diversion...