Was just thinking about this the other day. I was thinking of shading the SR world with The Losers, Taken, The A Team, etc. where the runners are mid level, journeymen operators. They have good reps, no profound screw-ups and generally well known in the community as competent and professional. My thoughts for character creation was to simply let the characters make the character they want. No BP or karmagen, just make you're guy or gal with the skills, equipment and ware your history says you would have.