The unified api needs to include departures information. Arrivals is no good at termini or if mode is terminating.
Unified api also needs to include stopping pattern information for tube, eg, fast, semi fast, all stations trains as seen on the Met.
Also would be good to see mainline trains (non tfl) returned within the api. The legacy api is partly capable of this but calling a destination “TOC” is not helpful enough.
Many tube calls in the unified api show duplicated trains. These should be removed with only one instance remaining as some locations can return 2-3 instances of the same train.