I recently created a page on the Kimchi wiki (UI Design Proposals) around developing a set of UI design proposals with the following goals:
We plan on making iterative updates to the screens and would like to open it up to feedback. The initial focus has been the major content areas (host, guest, template, storage, and networks) and will be working on details of the interactions, including page level blueprints. The layouts to support responsiveness are particularly important and would be part of the next updates.

We look forward to your feedback, including areas that may need more clarification and issues around implementation.

Thanks!

Don Spangler