Feel free to skip the questions below and go straight to your solutions and/or rationale, but I feel that these would be useful to many of those attempting to make such solutions:

(Some may questions may have overlapping answers. Combine wherever you like.)
1. What makes a Monk a Monk?

2. What did you most enjoy about Monk gameplay?

3. In what way were 3.x designs an improvement over 2.x. Which design ideas should have been extended in 4.x?

4. What significant issues did Monk still face in 3.x? To what degree, or under what conditions, were they acceptable?

5. How could these issues have been solved, if necessary?

6. How could the overall experience of Monk gameplay have been improved in 4.0?
With only 10 days left to Early Access, this is more a matter of circumventing boredom and defining our own tastes for future reference, an exercise in class-, raid- and self-analysis.

P.S. I love reading thorough text-walls of suggestions. Don't hold back.