It was an awesome day for sure! The weather conditions made for an interesting and soggy day. . .
I've always been one to often go back to fundamentals (esp with shooting) and really appreciate instructors and training groups that both stress the importance of that as well as put in the work on those themselves. Totally hear you on the ego thing. I had a couple of buddies who I really wanted to take this course, but they felt that "foundational" wouldn't benefit them. A couple of others had drill that weekend, but were down to go. Hopefully I'll be able to get them to come out in the near future.
As discussed, I get it, and in their defense, they have no knowledge behind this training groups concept and the training approach that they employ in the "Foundational" course that you took. Conceptually the progression of training, drills and more importantly how the drills can be executed by the individual is not something we have seen anywhere from a "base" level course.
I have yet to see anyone's base level course be able to hold the attention and test any shooter skill level from newer shooter all the way through advanced shooter. The concept was formulated by doing workups specifically for high-level shooters in select .mil and LE units pre-deployment. It is dubbed "Extreme Fundamentals" and is one course in a series of Advanced Diagnostics courses that was developed by that training group, and concepts from those courses can be seen in the base level course.
In fact, we have seen the same reaction as your buddies to the name "Extreme Fundamentals" by some pretty serious shooters. Invariably guys are literally sweating bullets in that course, not because it is physically challenging, but mentally and emotionally challenging. You finish that course as fatigued as any physically oriented course and guys can't wait to do it again or the next in the series. Hopefully, they are able to offer that series here someday.