I think collecting data is a great idea, and I'm really glad this is happening. Thank you for doing this! Because one of your goals is to "better [understand] the experiences of women and gender minorities in the EA community," I wanted to relay one reaction I had to the Community Health Team's website.
I found some of the language offputting because it seems to suggest that instances of (e.g.) sexual misconduct will be assessed primarily in terms of their impact on EA, rather than on the people involved. Here's an example:
"Our goal is to help the EA community and related communities have more positive impact, because we want a radically better world. A healthy community is a means to that end."
My basic reaction is: it is important to prevent sexual harassment (etc) because harassment is bad for the people who experience it, regardless of whether it affects the EA community's ability to have a positive impact.
This language is potentially alienating in and of itself, but also risks contributing to biased reporting by suggesting that the Community Health Team's response to the same kind of behavior might depend, for instance, on the perceived importance to EA of the parties involved. People are often already reluctant to disclose bad experiences, and I worry that framing the Community Health Team's work in this way will compound this, particularly in cases where accusations are being made against more established members of the community.
Consider hiring an outside firm to do an independent review.