I find the best teams are teams that you can easily farm and are powerful even at low gear/stars.
phoenix (old rex can be used on a clone team as well) gets palpatine and thrawn
empire(with newly acquired palp and thrawn, Darth vader: obtainable from achievements and later ship store, and any 2 empire (stormtrooper works with moff gideon team as well but empirial guard is easier, and most favor tarkin as 5th))
bad batch preform well and are easy to get (downside is they don't get a journey character but can later help get LV but will take a long time to get there)
geonosians get padme and wat tambor and are all around a great starting team because of many, many assists.
Darth and light revan teams are really strong and can even fight JML slightly harder to farm than other teams listed.
Bounty hunters (bossk and his ship are needed for many things, also mando and greef will help towards BAM)
clones w/ old rex. can auto Jabba.
CLS team (more difficult to farm but are very strong)
Go to the Journey Guide and start at tier 1 and work you way up.
Rebel squad for Emperor
Phoenix squad for Thrawn
Jedi squad for Yoda
Empire Squad for R2
First Order squad for BB8
Separatist squad for Padme
OT Rebels for CLS
Episode 7 Resistance for RJT
And on and on you go
Why wasn't Cobb Vanth shards a reward for the Krayt Dragon raid? Why wasn't Endor Gear Luke shards a reward for the Speeder Bike raid?
Replies
phoenix (old rex can be used on a clone team as well) gets palpatine and thrawn
empire(with newly acquired palp and thrawn, Darth vader: obtainable from achievements and later ship store, and any 2 empire (stormtrooper works with moff gideon team as well but empirial guard is easier, and most favor tarkin as 5th))
bad batch preform well and are easy to get (downside is they don't get a journey character but can later help get LV but will take a long time to get there)
geonosians get padme and wat tambor and are all around a great starting team because of many, many assists.
Darth and light revan teams are really strong and can even fight JML slightly harder to farm than other teams listed.
Bounty hunters (bossk and his ship are needed for many things, also mando and greef will help towards BAM)
clones w/ old rex. can auto Jabba.
CLS team (more difficult to farm but are very strong)
Rebel squad for Emperor
Phoenix squad for Thrawn
Jedi squad for Yoda
Empire Squad for R2
First Order squad for BB8
Separatist squad for Padme
OT Rebels for CLS
Episode 7 Resistance for RJT
And on and on you go
And cls had a big power advantage, so
Phoenix with crex, and GEONOSIANS