Missing recommendations about how to increase participation in under-represented group.
Unfortunately, the genie is already out of the bottle. It's not up to us to stop "wikifying" people. It's up to the thousands of users who have already been "wikified", and can leverage every process and tool to run circles around people who aren't.
I think it's literally impossible to remove the barriers. But the barriers being what they are, can we make them easier to overcome?
Increasing participation, improving the "WYSIWYG", removing barriers and avoiding discouragement... My friends, might not the Wikipedia:Sticky Notes idea help some of these things? I have created a section in the village pump here too. Preferably you would throw comments there :)