Currently, as designed, there is no actual contacting functionality in the IWH
widget (other than the mailto: links under each person's name, I guess). It's
actually *really* simple. What 'contact' and 'contacted' are are just a toggle
so that you (the project lead / outreach guru / whatever) can note to yourself
(and anyone else in the project) who's been contacted and who you haven't. If
you scroll, you can see everybody who's ever clicked IWH, but the people who
haven't been marked as 'contacted' appear first in the list.

I don't especially like the idea of hiding the entirety of IWH on a separate
project page tab -- seems like that would make it exceptionally easy to ignore
or forget about, at least until we have an IWH widget for the logged-in
dashboard. (In which case, we're gonna need a mini version of the UI *anyway*.) 

Also, of the extra features you list, really the only one that this doesn't
already have is the comma-delimited, email-ready mass list. We could probably
replace the old 'See all' link at the top of the widget with a link to generate
that.