I agree with avoiding identity-claim aspirations.

When I use the Ned Flanders example, what I'm thinking is:

I know Christians who say that belief in Jesus and being determined to love others will make life better, and they express this better-ness in their incredible patience and kindness--to the point where I wish I were equally patient and kind.

I think we could get to a point where Less Wrong members can say "living with a strong awareness of your own biases and a desire to improve yourself will make your life better", and express this better-ness by being good conversationalists, optimistic, and genuinely helpful to those with questions or problems--to the point where non-members wish they were equally cool/smart/fun/helpful, or whatever other values we hope to embody.