For spending all 30 trait points the bonus is an insignificant +3% damage to F1 abilities, which have a 10 second cooldown, are rarely used without full adrenaline, and are primarily used for their secondary effects and not their damage.
This is the only percentage-based trait bonus in the game that provides a 0.1% bonus per trait point instead of a 1% bonus per point… suggesting that there is a misplaced decimal point.
For perspective, 30 points into the Strength Trait line provides +300 power which – even with maximum offensive stats – provides more than a 3% damage bonus to all skills’ damage, including Burst Skills
The warrior’s 3% extra damage is probably worth every other classes’ 5-10% other than maybe the thief. Stop complaining or bring this to a more appropriate discussion board, warriors already have it easy with one of the best dps in the game.