spycat said:what i was trying to simulate with the percentile roll is the likelihood that the char being rolled up has noble blood. this is a method that a friend of mine used to use for probabuility on some of the more outlandish charicters i tried to get to play. hed make me roll percentile to determine if my char by the luck ofthe graw somehow was one of the few and proud that could claim some oddity or another.
LEW has deliberately avoided randomness in character creation -- note that we use point-buy -- and I don't think it's warranted to change this policy just to enable what you are proposing. If you want to make it possible but not too common for a character to have a certain feature, institute a trade-off. For example, you could allow a half-drow character to take a supernatural ability in place of his first-level feat -- in effect create these as feats that can only be taken by half-drow characters and only at first level. (I'm not saying that would be balanced, just offering this as an example of how you could set this up.)