Better eco options, higher capacity bendy and double deck e- busses or e-taxi, ride share (e cars if combustion engine ban is on). And some cutting edge tech like roads that generate power from solar and self driving transport for better traffic efficiency, ways to further reduce noise pollution like drone delivery so pops don’t leave home to shop (possible tie in to a remote work policy) or drone shipping to remove/reduce heavy trucks going from industrial to commercial or cargo hubs. Plaza stuff in vanilla, the ability to make a pedestrian focused city rather than automobile focused one. Visible changes in roads for good and poor maintenance or high/low budget, potholes, trash, overpass graffiti and the like.