I must say, this topic caught my attention. After reading it, what particularly caught my attention was how limited and funny the contest is.
Best In-Game Asset (art, including units, buildings and/or wonders)
Okay, I suppose this makes sense. You reward people for making good art. I know of several people I'd nominate off the bat.
Best World-Builder Scenario (just a single .wbs file)
I just had a "say what?" moment. I know of no really decent scenario that works purely off of a single .wbs file. In fact, without trying to be disparaging here, I'd say that anyone who created a new scenario without modifying the core rules (XML, Python, SDK) would probably be laughed out of the modding forums. All the great scenarios out there, including the BtS greats - Rhye's, FFH2, Road to War - use custom assets. The days of making WWII Europe using the standard rules of Civ 2 are long gone.
Best Map Script (just a single .py file)
This I can see working, and I know of several I'd nominate immediately, but to be honest, when compared to the many possibilities they could have chosen for a category, this is slightly underwhelming. Why not a modcomp category? Python implementation category? SDK innovation?
Best Educational Mod
Does this mean that educational mods can be more than just the .wbs files, or are they also limited? Because, quite frankly, Civilization 4 in its stock form is not the greatest educational tool, at least when it comes to history (which is what I presume this is aimed at). However, if educational mods are allowed to use custom assets, then why not non-educational scenarios?
I think the contest has stacked the deck against some of the greatest works made for Civ 4. And I understand why: custom scenarios use custom art, custom maps, and custom rules. They would therefore be using some of the work being entered in the other categories. Now, I must admit that I don't fully understand this, because one could argue that due to there being different categories, there wouldn't really be a conflict - you wouldn't have a user's own creation competing against him. But then you get into all the ownership issues and the whole thing becomes a mess.
Anyway, I don't particularly need a new computer (though the cash from selling it would be nice), so the whole thing is purely academic for me.