Note first, to avoid comments: I don't wanna give even slightest impression that I'll get admitted there or even get close to admissions (i.e. interview). But my $0.02 below...
What's so difficult about Harvard or Stanford? Maybe that's only me, but I really have an impression that people exaggerate H/S simply b/c of their rankings/reputation.
What do you find so difficult about Harvard (below)? 1: standard. 2: standard. 3-6: nice mixture of standard and creative so something nice for everybody.
1. What are your three most substantial accomplishments and why do you view them as such? (600-word limit)
2. What have you learned from a mistake? (400-word limit)
Please respond to two of the following (400-word limit each):
3. What would you like the MBA Admissions Board to know about your undergraduate academic experience?
4. Discuss how you have engaged with a community or organization.
5. What area of the world are you most curious about and why?
6. What is your career vision and why is this choice meaningful to you?
Stanford... different (1-2) and standard (3-6). Anyway better than boring standard stuff other schools ask. No BS here (i.e. short-/mid-term career vision which anyway will change while at school and majority writes this type of essay in a very 'acceptable' way - how do I look honest, but in reality give AdCom an impression of 'employability' after MBA). At least for Stanford you really write what your heart tells you (for essays 1-2).
So all in all I really don't get it... what so difficult here? Chicago no.2 - that's different story. Boring and nightmare to write.