For LIRR i would propose elimnating Diesel service and expand full electrification, starting with the oyster bay branch, and then the port jefferson branch, then Ronkonkoma and then finally the babylon branches.
I would also prioritize grade crossing elimnations.
I also support the expansion to Roosevelt field mall to make it a transfer center as planned in the 1963 plan with connections to the levittown branch with modifications with prioritization of grade crossing elimnations.