Well, I'm kinda new too but I'm trying to main GLA and been reading about this too, so I'll try to share what I do with mine.

For stats I add points only to:

Vitality: This is good since you get more HP in the long run and to be honest, I just keep adding points there to help me against Cactuars and 10,000 needles. -_-

Attack: I tend to solo a lot, so having a bit boost in your attacks helps killing things faster.

DEX: I hate to miss my attacks in critical moments, so having good dex can help you a lot.


For weapon skills, I'm using this atm:

- Light Stab (GLA)
- Rise Shield (GLA)
- Howling Vortex (GLA)
- Phalanx (GLA)
- Raging Strike (ARC)
- Hawk's Eye (ARC)
- Bloodbath (MRD)
- Second Wind (PUG)
- Invigorate (LANC)
- Heal (CON)
- Protect (CON)
- Shield (CON)

Shield Bash and any skill that can do AOE damage works well too, as I said, I'm still new, so I don't know if anything of this might be of some use to you but just wanted to help.