Anything interesting really, I generally find the usual format of 1v1s very boring, they generally all have the same layout: Similar maps with similar territory numbers and bonus sizes, similar neutrals and starting locations (Random Warlords usually) and usually a similar number and size of wastelands. Usually any changes are very small and rarely effect gameplay dramatically. Any change that adds any kind of "new thinking" to play is generally frowned upon by a lot of the community and a lot of the long-time players have trouble adapting. I think that's a shame, myself.
Personally to keep Warlight fresh and interesting I have to constantly play around with settings to find out new interactions, there are plenty of settings and cards available, and often they are very under-utilized.
The main aim of this contest is to see what people can come up with that isn't done very often, and create an interesting and workable template from that interaction. Anything that gives the sense of "Wow, I never thought of using that setting like that!" will score well. Anything that looks just like a standard "strategic" template won't score very highly.
Innovation is the key here, but then so is workability and fun :)
On a side note my map analysis tool is in it's very early stages, I ran a map through it today, here's the results:
http://pastebin.com/TBN6bjSn(Please note that it's in a very basic form because I have to recode it from scratch, if anyone would like me to analyse a map for them just PM me!)