Hello,
I saw your suggestion for the next Modelling Contest, "Half-breed Units". That idea sounds fun, and I bet I will be taken into consideration for the official theme poll.
Just FYI, and in case you are not familiar on how contest are regularly held in the Hive:
1) A Theme Discussion thread is opened in the Arena forum (in contest submission).
2) Users add and discuss ideas to the thread and the most popular ones are selected for the next step.
3) A theme poll is created with the most popular ideas. A single idea is selected, if we have a tied a second poll can be created.
4) A host is selected by the moderator(s) and the contest is officially started.