Space 1889
Free Form is ok,but it does make conflict resolution difficult. The other option seems more to my taste.
My thumb nail character concept, is a disgraced British army officer that was caught taking funds from the officers mess, to pay his gambling debts. It was a kiss of death in Victorian society, to dishonor the regiment,himself, and worse of all, his family. His father is the Earl of something or other,and disowned his son.
Now the character has come to Mars, in an attempt to reclaim his honor,and make a new life for himself.