With respect to the new update you only need to know 2 things.
For all the era stuff just do you daily colloseum runs and episode quests. You can put in effort if you want but the return is minimal.
Every 2 weeks new journey quest release. Always do these asap. You will get LST for G13 and all zetas. I recommend you to make a squad tab so you dont accidentaly gear them if you can get them for free. See image: https://www.reddit.com/r/SWGalaxyOfHeroes/comments/1oro5q5/infographic_for_upcoming_anniversary_lightspeed
Your account is in a good position. With all the new updates there are many low hanging fruits for you to grab.
Youre good on ships. Make sure get the executor and profundity to 7* asap for your fleet arena and GAC.
I assume youre close on alot of provingground characters. These take a lot of gear, zetas and omicrons. So if you have less then 100 shards left your focus should be on these. Here is how I would do it in order of priority.
Done:
CAT - JMK team✅️
Malgus - Sith Empire team ✅️
To Do:
Bane - Any sith
Queen amidala - Ponco Bros
Ezra - JML/JMK/Rey
DS Rey - SLKR team
Maul/Malicos- Cere Maul Malicos Cal Fulcrum/KRU
Luthen - Saw/MM team. For last, nice to have.
Skip:
Boba - Skip ❌️
Ben - Skip until Rey ❌️
Trench - Skip ❌️
DTMG - Skip unless you want a good RoTe team ❌️
You will get free Inquisitors, so gear them so you can get Reva.
You will get a free Beq, BAM, Mandalorian LST (use on Paz). So you only need to gear IG12 for BKM.
You will need Cere and Cal for Maul and Malicos (skip Mauldalorians for now, you can always make 2 teams. Maul works great with cere). Id go for Jedi Cal Kestis for your JML Team.
TLDR:
7* Executor and Profundity
Finish Leia
Finish bunch of provinground teams
Get JKCK whilst working on Maul/Malicos
Get BKM
Finish Inqs for Reva.