Black Knight Irios
Explorer
Given as it's in theory a role-playing game and that people are aware of this going in, any limits on what type or personality of character a player can play are - let's face it - self-inflicted. And asking the game to fix this only ends up putting rules-based limits on those who otherwise might be able to role-play what they want, how they want.
I rather have a less charismatic player be able to play a character that is somewhat out of his league than having the charismatic player always doing exceptionally well in social encounters. Because if the charismatic player wants to he can put points in the relevant skill and his char ist up to his social skills, the less charismatic player has no so easy solution.
Hyperbole
It's like telling a crippled person in a wheelchair 'get up and run, your sitting there is only self inflicted and you can do it if you just wanted'.
In a mixed group (RL social skillmonkeys and introverted/etc. players) I rather empower the "weaker" side than giving yet more power to the "stronger" side.
BTW, we are off-topic...