The most interesting take away from this course for me would have to be model 1 versus model 2 management from Argyris and Schon. I had experiences with working under both types of managers before. Personally, I found the single loop approach to be more effective in corporate settings in which deadlines are tight (for the particular internship we had to meet the deadline of November 11th which is equivalent in China to Black Friday in America). I certainly see the merits of a more open and innovative approach using double loop, but from what I read and what I experienced, work environments must be conducive (in industries that thrive on innovation and tasks being jointly controlled such as application development) in order for it to produce results.
As for class structure and blogging, I would prefer more of a class discussion oriented blogging instead of purely interaction between student and professor. Having other students who have written blogs on similar topics as well as the professor give input and feedback would in my opinion be more engaging. I found that approaches like this used in Moodle classes such as epsy 220 which I'm taking currently can produce very stimulating results. For class structure, I'd like to reference a political science class I took with Professor Seitz. The class was structured in a seminar style in which students sit in a circle around the professor and take turns offering voluntary input. Although I'm not sure whether such a style would fit what you have in mind for an economics course, I highly enjoyed that class due to the level of involvement from everybody. Perhaps a circle would not be necessary, but having a staggered seating in which students can choose to sit at the back and everyone is looking forwards at the board instead of at each other discourages participation and sharing. If what I'm referencing aligns with your goals for the course, some of these aspects can be used as improvement to future courses.
Homework and blogging do take time, but amount of time is dependent on the content of the assignment. To put into perspective, the last excel homework took me 10 minutes while the one on transfer pricing took me nearly three hours because I couldn't figure out where to plug in each cell. Blogging on the other hand typically takes around half an hour. The blog on Argyris and Schon took longer due to the reading preparation involved.