Cautiously optimistic that my governor's plan won't be the Worst Thing Ever, but that's a pretty low bar.
SEPTA is basically a legacy system. It's old. It needs money. I don't think the combined commuter rail/subway/trolley rail system is as critical for the city as similar systems are in, say, Boston or Chicago, but it's pretty key. About 750,000 weekday trips on the system. You could yank out a line here or there and it wouldn't be catastrophic, but the system needs to function for the city to function. There's no place for all those cars, even if people could afford them.