How about CEGUI for Unity?

[zaexage]

1. I think CEGUI is a better solution than UnityGUI for many developers.
2. This port may take some work, but shouldn't be mission-impossible. e.g.: http://forum.unity3d.com/threads/51291- ... I-in-Unity
3. CEGUI for Unity could enlarge the user and developer community effectively: PC, Mac, Mobile, Web, Console, etc.
4. Unity Asset Store could make a good alternative source of donation. consider this: http://u3d.as/content/ab-software/ez-gui/1rg