It is not entirely clear what experiences you have in mind. Obviously many differnt.

Heinlein comes to mind:

"A human being should be able to

• change a diaper,
• plan an invasion,
• butcher a hog,
• conn a ship,
• design a building,
• write a sonnet,
• balance accounts,
• build a wall,
• set a bone,
• comfort the dying,
• take orders,
• give orders,
• cooperate,
• act alone,
• solve equations,
• analyze a new problem,
• pitch manure,
• program a computer,
• cook a tasty meal,
• fight efficiently,
• die gallantly.

Specialization is for insects."

The latter makes a requirement of it clear: Broadness of experience. Interestingly this is at stark contrast with our society relying on specialization. Why is that? Because specialization is about efficiency but broadness enables integration and new things?

Which of these are neccessary for a formidable 1000-year-old vampire?