How to fix rangers and warriors without losing the "classic" feel.

[Lucia Moonglow]

I'll probably get flamed for posting my honest opinion here, but this is it anyway.

Warrior
Currently, warriors have a very difficult time holding aggro. Yes, taunt makes it possible to regain aggro temporarily if it's lost, but they shouldn't be losing it in the first place, nor should they be required to "build aggro" prior to the rest of the party engaging unless the fight is against a raid boss.

Solution: Change taunt so that it generates a flat amount of aggro per use based on the taunt skill, with diminishing returns if the target is higher level than the warrior. Similar to the Incite line present on live, but without the ability to be used at range.

Ranger
As was the case prior to Luclin and the introduction of AAs and ranger-specific group buffs, rangers have no real role in the game. They are an attempt at a "jack of all trades" class like the Bard, however unlike the bard they cannot bring anything unique to a group, and as such most group roles are better served by a different class entirely (rogue for DPS, monk for pulling, druid for snares, etc).

Solution #1: Up ranger DPS so that they're placed just behind (or on equal terms with) monks. You can up their melee DPS, provide ranger-only weapons, or up their archery damage. There are a number of ways to accomplish this.

Solution #2: Give rangers a unique line of buffs that stack with other buffs, making them appealing to certain groups. Good examples are group ATK buffs for melee groups, or mana/HP regen buffs (similar to the BST spiritual line).