My be game could start with writing your resume, in standard resume format, like name, age, education, career, hobies and special skills. And afterword include one of those Myers-Briggs like tests, Attach your photo to the file and there you go new Ranger recruit is born.
One thing I liked about Tropico character traits is that for every positive effect there was equally negative effect in other areas.
Maybe it all could be age dependent, let's say that evry profession takes 5 years to be excellent, 4 years to be good, 3 years to be profficient, 2 years to be passable, and 1 year to be exposed. Each profession gives you 2 skills and one charcter trait.
So let's say you are 30 years old
-18 years for school and kindergarden
12 years left-you can choose to go to colledge, which will open some professions for you, but you will loose 4 years which you could spend on another profession.
without colledge you can have 2 professions fully developed with 4 skills and 2 charcter traits
with colledge you can have maybe one fully developed profession that required a degree and be profficient in another, cut you only have 2 skills and one charcter trait
your hobbies may take 10 years to be excellent and you can start having hobbies from age of say 12, and they give you 3 skills and 2 charcter traits
Something like that, also for example if you keep staying in the profession, you can train others to the degree of extra spent years, for example if you persued profession for 6 years, you could train other NPCs to be (level 1 exposed).
This way if one member of your party is in the military for 10 years and he obtained 2 skills (marksmanship and explosives) he can train the rest of the party to level five in military skills (over time of course)
By writing this "resume" you create all the necessary information, but there could be "free form fields" like you could enetr names of the companies you worked for, cities you lived in, some details of your child hood
In fact in your resume you could indicate that you were in prison with all the skills you could pick up in prison.
You could request R&R days off for your religious holidays
You could specify your "mesurements" for the uniform (height, weight, bra size
Political Party affiliation