Any farming suggestions...

Rebels?
Cantina: I stopped my cantina shipments on HRS for 7*ing Ahsoka right now but in a few days i will continue on HRS again. He seems to be really good.
Arena: Finished Ackbar and now i am working on Han.
GW: i dont know man....finished Biggs of course and now i am spending my tokens on NI there.

I think that in the GW shipments the best is farm the characters in the following order: Luminara, Poggle, IG-86 and Resistance Pilot. The rest can be useful in some node or event, as Phasma or Datcha, but not in the Arena.

In the Arena shipments the best would be: Sidious, Eeth Koth (for the Yoda event), Ventress and IG-88.

In the Cantina nodes the best are Geonosian Soldier, Dooku, Kylo Ren and for the Yoda event Barriss Offee and Jedi Consular.

In the Cantina shipments the best are Poe Dameron, Qui-Gon Jinn and Daka.

And in the hard nodes the best is try to get shards of Poe, Royal Guard, Rey, FOTP and Resistance Trooper.

The rest maybe can be useful in some event, node or GW, but not are the best.