I tend to avoid giving exact builds because it seems boring for everybody to have the same build That being said, I'm planning to make some grinding guides for classes/roles, that will explain better to the healers how to heal effectively, explain to the tanks how to tank (and protect the team), and ... eventually I'll do DPS, haha, but that's fairly easy for grinding since you just spam AoE skills.
Unfortunately I don't do PvP so I can't help with builds for that, and real PvE activities are kind of... non-existent(?) in the game at the moment. So mostly it will be the skills used in group grinds, how to interact effectively with party members, what the class' other skills do, how to use them, etc. I hope to have time to do this project this weekend, and if anybody (on Odin please) wants to help, just let me know!
Also, you're definitely right about the forums lacking current/useful information, and one of my current projects is to work towards fixing that a bit, so if there's anything else that would be helpful just let me know and I'll see what I can do.
EDIT: Quick answer to the stat question. Currently, the stat of choice is indeed VIT for every class except for Swordsman/Knight/Warrior, but, that assumes you have spent the 2 points in their passive skill "Battle Tactics", which increases the amount of damage dealt on crit. So normally, if an attack does 5 damage, the crit will do 10 since the damage doubles. Battle Tactics makes the crit damage increase by an amount per INT point, which means that lots of INT = lots of crit damage. Everybody else uses VIT because the bonus they get from other stats doesn't actually amount to much (your gear changes your stats more), but more HP is always nice. If you want to check what you get on your class for yourself, hover over the STR / INT / etc text in your character window, and it will tell you how your other stats increase per point.
Edited by Emilizzard, 06 February 2015 - 02:20 PM.