This tweak is very simple, but very key. Let the rogues and ninjas rage! For everyone who’s never had a rogue in the party, there’s nothing preventing them from taking one feat so they can sneak attack with a greatsword. Or a greataxe. Or a spiked chain, for that matter. To all those who might argue that they’d rather spend their feat elsewhere, I ask you: as a character who uses weapons, would you take a feat that increases your damage from a d6 to a d12? Of course you would.
This tweak is meant to preserve not only balance, but a style as well. While you might argue that the rules should be permissive enough to allow a player to do what they wish, certain character elements can come out only through limitation. If anyone can do anything–if fighters could cast spells and rogues can use a greatsword–then your choices are lacking in interest, and you cannot play to or against an iconic style. To preserve the style of the lightly-armed rogue who sneaks in serious damage, I beg you to adopt this tweak.
-Max Porter Zasada