i actually like ancient greece template. a lot more then middle earth or ancient china atleast :p
but if you're looking for new templates how about volcano island or noord brabant?
http://warlight.net/Map.aspx?ID=5069
they are fairly strategical and don't usually take long to play. plus it's different to play on maps with more numerous borders. and diversity is always good. :)
also, i don't understand why you don't have larger brackets and only do the live coverage of the more interesting games. if you're afraid the better players wont want to play through 3 hours of live tournament i guess you could keep it limited to 16 brackets but hold qualifiers of some sort during the week. it's important to let underdogs have a swing at it, and from this weeks lobby it seems lot of folks were cut off. you could do some sort of scheme where the 2 finalists from previous week would get automatically accepted and the other 14 slots would be available to the top players from the qualifiers. maybe throw in a couple of guest wildcards taken from top 20 of the ladder now and again to keep the number of active pros high.