Simple Q&A D&D 3.5 (by RAW) XXI

[Curmudgeon]

A 677

Here's an example of such a special quality, from Monster Manual III on page 63:

Pack Fervor (Ex): An ibixian loves to brawl with or alongside others of its kind. Doing this increases its enjoyment of the fight and adds ferocity to its attacks. When an ibixian is within 30 feet of another goatfolk, it gains a +2 morale bonus on attack rolls and damage rolls and a +4 morale bonus on saving throws against fear effects.

A 678 No.

From page 151 of Rules Compendium:

A wielder gains no reach from a reach weapon that is too small. No additional reach is granted by a reach weapon that is too big.

A 679

When you are treated as one size larger, a longsword that you can wield without penalty is a 1-handed weapon. You would receive no benefit dependent on carrying a 2-handed weapon.