I have an other idea about the native species on the planet. How about using 6 inch figure (ML, Power Rangers or some others as base) making them larger (sub-giant) species? Could explan the mountainous area of the planet too, where they had to be larger than average. Or if we go with a Dantooine type work, it could still work, we would just need some big creatures to explan the size difference. They would be totally different from anything we have seen in the Star Wars universe and I think it could work. Maybe have some Imperial chain gangs of some miners or something like that. Any thoughts?