Hi David, I love your apps. Long time iBart user, but what would be nice is a single app that will cover making connections across transit systems. If I'm going to the South Bay tell me how to take Muni to BART or CalTrain and then BART /Caltrain to VA and how far to walk. THAT would be the killer feature that would making having no transit directions awesome.
I'm in Rome, and it's simply not possible to get from most points A to B with crossing transit modes and transit brands – most trips need two or three, sometimes four.
Try getting from Pz. Belli in Trastevere to Villa d'Este in Tivoli in time for the 8:30 PM light show. Then try to get back when the train isn't running. Both trips involve an area bus or train, as well as local metro, bus, and tram. The downtown map comes with four brands' routes.
In Rome even Google isn't grasping this, but same is true of NYC, getting into the city, or heading from Newark to Queens, or Stamford to JFK and LGA.