I have several ideas as my friends and i are working on a fantasy setting using spycraft rules. first figure out what main class types would be. ie soldier, explorer, historian, procurer of rare intiquities. figure out what makes thsi procurer good. he can detect and remove traps, soem comabt skills but not as good as a soldier so maybe a tier 2 BaB. probably a greater number of scholarly skills as well as dex based skills. core ability might be identify. he can make an appraise check to identify any artifact. his result cap raised by 5 increaseing as he levels. that sort of thing. evasion would be a good class ability. cultures would be a skill he would probably have. you make this list then fit it on the template of an existing class set and there ya go.