Bigger is better.
Well, perhaps not always, but larger models on the tabletop do look impressive.
I'm thinking about using large tables at the local library, or convention, at least 6' x 12', which at a 1:10 ground scale ratio (ground scale to real model scale at 1/100th – or 1/1000th, true scale) works out to about 1 meter = 1,000 meters, or 1mm = 1 meter.
So, on a 12' x 6' table, you get 3,000m x 1,500m, which is fine for frontal attack/defense games. Plus, you can use metric measurements for the ground scale, which makes computing distance rather simple, e.g. 500mm = 500 meters.
Will need to use map movement, or other systems to permit tactical, outflanking maneuvers though.
Still, I suspect the battles will look impressive, compared to the smaller 1/300th scale micro-armor battles. Will be keeping those for larger battles, with more tabletop maneuvering.
I've seen the battle reports from the 20mm guys, and they look great, so I figure 1/100th will be a nice compromise, since I can't afford the larger scale right now.
paints another of 
