Levels 1 - 5 look very similar to the way they appear in the Salmons text. This is all very helpful information and I understand why you would want to include it in the wiki document. One recommendation is to change it into a guideline by saying something like "In order to encourage true collaboration in the dialogue stage, be sure to model and explain the following skills: (then list the skills). Something similar could be done for the other 4 levels as well. Another idea is to post a few examples of how one might model and explain these behaviors for students. (Activities that could be done in the classroom to help students practice the skills).

This question does not seem "guideline friendly". It would be difficult to answer the question and post guidelines at the same time so I understand why there are not specific guidelines here. It would be nice to have the following affordances and limitations grouped so that all of the affordances are together and all of the limitations are together. I think it would be easier for the reader if it were organized in that way.

There is something a bit wrong grammatically with this statement - I think you could either take off the word "By" or move "Help maximize student learning" to the beginning of the sentence.

Are you referring to student or instructor functions here? If these are student functions, examples of roles (team leader, record keeper, secretary, etc.) could be helpful as examples of how these functions transfer into roles.