This without a mention of Clipper is odd. The Clipper Card system is the most likely target for expansion of the current infrastructure.
Considering I can’t even go into BART and come out the same station moments later without being charged $6, which is non refundable unless I give my name and address, I have little hope for this idea.
I know one member of the relatively new Clipper software team, which was brought in with a mandate to consolidate and expand functionality, and it doesn’t sound like they are exceptionally skilled or productive.