IMO the "Adventurer" training package in SR gives ranks in what might be considered the most basic skills needed. BD, weapon, swimming, climbing, first aid, attunement, observation and alertness.
When designing a character I think in terms of abilities which the character should cover in some way:
- movement (climbing, sprinting, swimming flying, long door etc)
- perception (observation, alterness, various spells)
- combat (weapons or magic)
- sort of speciality, which makes him/her stand out from the crowd (healing, knowledge, influence, subterfuge, divination etc)
- and lastly; "flavour". This could be anything not neccessarily directly "useful" which gives the character some depth, e.g. an instrument or a craft.