I'll take the technical specs as given and focus on the customer aspects.
Here is my wish list:
1. Married pairs shall have a clear and open gangway for easy passage among cars while in motion. Heck, articulated cars would be fine. This is becoming common for trains overseas and can be seen on the Acela.
2. Big windows of course. Acela size would be preferred.
3. Four stream doors for rapid loading and unloading.
4. If we must have steps, then make them automatic folding steps and get rid of the manual traps. No steps = better.
5. Facing seats with a table. This would be a boon for families or groups. Reserve these ares for groups.
6. Wi-fi
7. Seating area with space for a child in a stroller for families to use.
8. Bike racks at the doors.
9. LED lighting that can be dimmed and is indirect. No more fluorescent interrogation room lighting.
10. Power outlets.
11. Restrooms.
12. "Rail fan seat" if possible, but if #14 happens, I would trade this for streamlining. Make the rear of the cab glass like the ICE to see out the front...
13. Actual livery not naked steel. Also, use colors with more pop as opposed the flat hues we currently have. Richer, deeper colors or else brighter. The train is a core part of SEPTA's brand image -- particularly among legislators and business leaders.
14. Front end "face" of the train must have a streamlined look which is important for marketing of the service.
15. Seat design that is actually beautiful not just utilitarian.
I like these DMUs, which I realize are not really commuter trains, but have some similarities:
http://www.vicsig.net/index.php?page=pa ... pe=VLocity