[Why Synthweaving and Underworld Trading together?]

So I am almost level 600 in Synthweaving, Archaeology and Underworld Trading, but noticed I rarely use UT for mats?

 

Should I keep UT, as it doesnt seems to be needed for Synthweaving, and replace it with Slicing, or will I lack materials end game?

 

Underworld Trading is my lowest level skill, yet I never notice its there since I rarely need the materials from it.

[What to do after 300 synthweaving?]

So this is my first char. I am level 53 and have blasted through the areas, and I am level 50 in my story mission.

 

However, My synthweaving is 300 and my trainer only has something for level 600. How do I train between 300 and 600? I've tried google it, and can't find anything. There's a huge gap between 300 and 600 and I have no clue how to progress.

[Sith Assassin - Stuck after Nar Shaddaa cult quest]

For anyone with similar issue, I found a fix:

 

I went under group finder, and under Flashpoint I found a specific Flashpoint with "story" mark. Completed it, and got the class quest to do it again, and then I fixed it myself.

[Sith Assassin - Stuck after Nar Shaddaa cult quest]

I've traveled to all the areas you guys suggested: Dromund Kas, Balmora and Nar Shadaa, but there was nothing like class quests. I am truly stuck.

[Sith Assassin - Stuck after Nar Shaddaa cult quest]

In my journal. I have no purple missions at all.

[Sith Assassin - Stuck after Nar Shaddaa cult quest]

Well my char Is 9 years old so don't know but I think I have made it back then. How do I know? Cus I don't have any story missions.

[Sith Assassin - Stuck after Nar Shaddaa cult quest]

So I completed this quest and delivered it to my Holo Terminal in my ship, and I received nothing afterwards, so now I have no class quest. I can see that this is an old bug, but I haven't found a solution other than sending a ticket to Bioware.

 

I have done that, but as I can see the wait time is very long, does anyone have a solution? I tried to relog, shut down the game, travel around with my ship, but nothing works.

[Which crew skills for earning credits?]

What about Synthweaving, Archaeology and Underworld Trading?

[Which crew skills for earning credits?]

I am a Sith Assasssin.

 

Some says Synthweaving for crafting, other says its best just to have 3 gathering skills.

 

I am level 28 atm, and I want to have some help to get some credits a long the way.

 

Should I just get 3 gathering skills? And if yes, which one?