I never actually joined a full course, for bazi of feng shui... From what I have observed around some of the big schools out there are doing good work, but...
I don't know.
Comparing it to Inner Alchemy or TCM, there seems to be problems with bazi and feng shui in the English speaking world.
There are tons of materials for the first 2, very deep view to them as well. And almost nothing like that for bazi of Feng Shui.
I don't know why that is, I have theories, but nothing clear yet... As they aren't easier, if something TCM is even more complex. Isn't cheaper. Can't say the results are faster to be seen, either.
Anyway, JY and his many students seems to be doing good job, although that is how it looks from outside, haven't been in a course there, either, so can't be sure, but it looks solid.
Jlim of course has mangpai course and what we have seen in the open there has been very good, possibly the course is as well.
Other then that can't really comment. My focused moved out of bazi and feng shui years ago to inner alchemy, TCM and other systems outside Five Arts, so I may watch a video, make some simple calculator or read a post sometimes, but far, far away from joining a course now, or deeply observing the field like before, so no idea if there is something new. I see people have posted many new videos in youtube, but haven't watched most.