Group Logo Idea; Kins logo Explored..

I have expanded on kins idea for the logo;
Kins' Post 'HERE'

I have worked on a new document, set at 325px by 325px.

Single logo's for each group member?

 I then tried to mix all four of the previous together, making the rainbow effect, but it doesn't look as meaningful or professional.

I then went onto the single, blue gradient, for example, to create a rough Web layout.

What does everyone think about this?