There are a couple of factors involved in skewing toward medium-size or
small variants instead of large ones.
One is time; a year is a long time, but some large variants are really
long games.
One is intimidation; big games are more likely to make people nervous than
small games. This event has a learning curve to it; for the first time or
two out, we want to monitor just how big that learning curve is.
One is the fact that we have lots of decent under-recognized small
variants, because of our contests, and perhaps not quite so many large
ones.
But the comments and votes are assuredly being noted and logged, and will
tell a story by the time the polling ends. :)