I've had some success with the runway/10k aspects of GTD and am starting to investigate the higher-levels. Integrating ideas from other books (7 Habits, Your Best Year Yet, etc.) is helpful here, but I'd like to stick closer to what DA has in mind.

My problem is that I haven't seen many examples of 20k-50k items. Here is a sample of my lists:

20k (roles, areas of responsibility)
Be a loving husband
Develop team leaders

30k (1-2 years)
Create new technology initiatives
Participate in 3 triathlons

40k (3-5 years)
Get an MBA
Do a half-ironman

50k (life)
Raise a family
Retire comfortably

What do yours look like?

Paul