TL;DR: Even though this course has been revamped, there's still a lot of work to do. The class has potential, but it lacks direction as of right now.
The Content
1. Regression
The professor is beyond boring, but the content is useful. We go deeper than what we saw in 6501. My advice: just read the slides, since the teacher only reads them anyway.
2. Finance
The teacher is great, and the content useful if you are interested in stock trading.
3. Marketing
That was the worst part of the course. First, the lectures are extremely long (and boring). Second, the content barely touches analytics! There were so many analytics topics that we could have explored, but that we just ignored. One suggestion I would have is to have a section on how to implement an A/B test and the multi-armed bandit technique from scratch. Right now (Spring 2020), the marketing module mostly consists of random stats that won't be relevant if six months (e.g., in the social media section, the teacher does not even talk about TikTok). In short, if they need to redo a part of the course, it should be this one.
4. Operations Management
This is best part of the course. The teacher is fantastic, and the content is very useful (if you want to work in the field).
The Course Organisation
The course is a mess. Professor Bien (the course coordinator) didn't seem to have any experience in online education (even though it was his second semester teaching this class). We were given surprise peer-grading assignments twice, the second one being during the COVID-19 crisis. It felt like the syllabus was just a suggestion, and the teaching staff could change it as they wanted. Finally, the course coordinator (and the TAs) did not accept constructive criticism, which eventually led to heated discussions on Plazza.
The TAs
Most TAs (but not all) were arrogant and mostly unhelpful. For a reason that I cannot understand to this day, they were always "closing posts," even if the answer they provided was "we'll get back to you." By the end of the course, they stopped doing that after many complaints
Office Hours
Prof. Bien office hours were 2-hour long, and he spent most of the time talking about stuff not related to the course. He sometimes provided useful information, though. The office hours led by the TAs were better, but to be honest, if you are decent in R (i.e., you did not struggle too much in 6501), you don't have to attend them.
Exam/Homework
They were mostly OK, but with occasional misleading questions. The averages were extremely high, which makes me believe that not many thoughts were put into them. Verify at the beginning of the semester what you are allowed to have during the exam since, as I mentioned earlier, the syllabus is just a suggestion in this course. For what it's worth, the programming parts were take-homes, we had a proctored theory midterm (one two-sided cheat sheet), and an open book/not proctored final exam (because of COVID-19).
One thing that was not OK was the peer-grading process. Both times we had a peer-graded homework, it was a total disaster (confusing rubric, unclear explanations...). In the end, the TAs had to regrade each homework manually.
COVID-19
It took them at least three weeks before acknowledging that COVID-19 was actually a thing. Many students reach out to Joel Sokol, and I believe that this is the reason why Prof. Bien finally addressed the situation. This is why we got the open book final exam. We also got extra credits, which was welcomed (one of, if not the only, highlight of the semester).
Conclusion
If the course were optional, I would strongly suggest that you take something else. But since we have to take it as OMSA students, I would suggest that you ask many questions about the evaluations at the beginning of the semester (what is proctored, number of cheat sheets...). We had two peer-graded homework this semester, but Prof. Bien said that he wanted to include more in the future. So, it is very likely that the workload in this class will increase.
Also, note that the 3/4 of the content was still enjoyable, so there's at least that :)