The Mission statement itself will be seen on the front page already, while the whole Mission - Why - How - What will be shown on the page about IMMA.
I like this format that Penny proposed, as it answers just the questions one might ask about what IMMA is and does, including the core values. However, your proposal, which I find well-put, will be included into the Board discussion.

I suggest we all continue thinking about the texts and pictures shown on IMMA's website, aiming to align and complete them so every member feels motivated and grateful to share [http://|www.meta-health.info]!