Pot on about crossing Markei in the mezzanine--vastly more useful for riders. The idae was outlined to a Muni planner... Secondly, the tracks going up the grade should havebecome stacked w/bellmouths foe an eventual Geary route. Even before the Chase center, the former Mission Bay yards was already a huge destination given the ballpark, UCSF Med, etc. Finding a more expensive way to build an inadequate progect is the SF way. The platforms in the Central Subway are too short for useful transit.