What I found really useful was the mixing of a lot of different maps -- Wilber, Kegan, Beck, Fowler, Gilligan, Kohlberg, and so on. And more importantly, we didn't waste time on the higher levels (subtle, causal, non-dual) because none of us are really seeing people with any awareness of these levels, let alone any experience of them.
The session helped me clarify how integral is useful to me in my work, and how I use it to relate to people's "parts." I spend a lot of time trying to relate to people's firefighters and managers.
This afternoon I get to learn how to be really, really, REALLY good at using the IFS model. Uh, yeah, OK. Sure.