Will the Rancher2.x support "link graph" UI in future?

Will the Rancher2.x support “link graph” UI in future ?

No; there is no explicit linking of workloads to one another in kubernetes so there isn’t anything to draw a graph of. (Some add-ons keep track of connections and can generate data for a graph of implicit links, but these are not deployed by default)

Rainbond has the graph built in.
and it display qps on every single link line between pods.
looks great

As I said, that’s implicit connection data from an add-on (probably Envoy) that is not part of kubernetes or deployed by default.