Arkhandus said:The Shadow Blade feat from Book of Nine Swords is handy. It applies Dexterity bonus to damage, and the only prerequisite IIRC is knowledge of one Shadow Hand stance.
Generally that means taking 1 level in a martial adept class (crusader, swordsage, warblade) or taking the Martial Study feat and then the Martial Stance feat (the former is a prerequisite for the latter). Other Shadow Hand-related feats from that book can also help some. Similarly, I think the Desert Wind-related feats help boost damage output, AC, and I think movement speed (don't have the book myself, and I'm not borrowing a copy at present). Really, 1 level of Swordsage alone would be great for a wee'un. Some maneuvers from the Setting Sun discipline also help small folks deal with larger folks in a fight.
frankthedm said:Realistically penalized. A small creature should have a bitch of a time knocking over or shoving around a significantly larger one.
Deset Gled said:A small person should have a hard time pushing someone over or grappling them, but I would think they would have an easier time hitting someone in the knee to make them fall over. I guess that's more of a complaint about the tripping mechanics being soley based on strength instead of dex, though.