Its very probable that evidence of early earth life will be found there that has been transported by meteor impact on the earth.
However the assumption that life can be formed without intelligent design is just that - the recent first life conference ruled out earth as a possible place for abiogenesis. Of course most biologists want to hold on to a Darwinian model - but there really isn't any solid testable theory that could give rise to life on earth from inorganic chemicals by random chance. The RNA hypothesis is a dead end, Miller's experiments would never work, protein folding is a huge problem, the extreme unlikelihood of successful mutations producing viable enzymes (1 in 10 to the power 77) is the same as finding one individual atom in the entire galaxy. There is no 'blind watchmaker' of natural selection acting at the level of mutation.