An organisations mission statement should clearly communicate what it is that they do. Many mission statements succumb to an overuse of words in general, In particular, words or expressions (jargon) used by a profession or group that are difficult for others to understand. I am in agreement with Penny and Lars that we need to remain focused on our target audience and be clear and consice and for the Layman! 

Layman's terms- someone who is not trained to a high or professional standard in a particular subject. the layman (=all laymen as a group): a medical dictionary for the layman. in layman's terms (=in words that someone who is not an expert can understand): What does that mean in layman's terms?

I would also like to second Karen's sentiment and say thank you for doing the Mission Statement.