You have a spread of Zetas but no focused Arena team(s) and mods always need work!
STEP 1 pick a team or 2 to really work on!
From your roster 3 obvious choices
1) First Order - Best in my opinion would be - KRU, Kylo, Executioner, FOST and FOO
(zFOST is amazing and FOX lays down the damage)
2) Rebels - your issue is you need Chewie.....so you need some seriously geared BHs - and your BHs are weak. Boba at G12, Dengar at G10 as a minimum and ideally Bossk....
Then you would be aiming at - CLS, Chewie, Han, R2D2, Old Ben (10 Zetas on this team)
3) Resistance - JTR, R2 and BB8 are the core then 2 more. I’m no expert but RT and Holdo seem to work.
STEP 2
1) After you’ve picked and farmed a team to 7* then spend several weeks or more farming mods.
If you had any of those 3 teams with decent speed secondary mods then you could break top 50 on Offence....sure you will drop back on defence. But seriously don’t aim for top 500.
Personally I’d be farming FOST on hard nodes, FOX in Cantina, Greedo in Squad Arena Store, Dengar with Guild Currency + either Bossk (optimal) or Zam (also works)
1) KRU, FOST, FOX, FOO, Kylo - Zetas on FOST and Kylo next
2) Boba(l), Greedo, Dengar, Zam, Cad Bane - Boba to G12, others to G10+, no Zetas needed.
3) Mod Farm, Mod Farm, more Mod farming.
