They are standardized but we might offer a bunch of different variations ( I say might, because that isn't guaranteed, but we'd like to do at least a male and female version ). We can't go too crazy in this area because modeling a custom statue for each individual backer would cost a good chunk of the $500 tier. Maybe we could do that for $2500 though.
The main idea with the statues is that we'll hide them in various locations across the solar system.Nobody will know where they are, not even the backer ( unless you chose the specify the location in the $2500 tier ), but it'll be guaranteed to be somewhere. Players who like to explore might look for them specifically, or stumble upon them by accident, and report their location to their owners. If after X months nobody has discovered the location of your statue, we might give you a small hint ( like the general location of where your statue is ).
Personally I think it's a pretty cool small enhancement to the exploration / sandbox part of the game, but doubles as something cool for backers.