I read every chapter carefully and wrote notes, so I will probably write a longer review somewhere else. To summarize, this is a good book which gives a lot of starting points for design leaders. This is not a bible about leading or managing teams though, which I expected a little bit.
A lot of the chapters give decent advice, but lack depth. For example the chapter about diversity inclusion had very little actionable guidance, except posting job ads in groups specialized in reaching minorities. Most of the guidance was imo just good management. Maybe my expectations were too high?
The chapter on design charters was one of the better ones. Step by step guidance on how (and why) to create one. This was definitely a high point in the book for me. Sometimes I would appreciate more guidance about handling potentially problematic team members. Many of us don't hire our teams, but take over existing ones with good and bad performers. Managing some of the more typical "bad team players" in such workshops is guidance I and surely others could really use. Also it's mostly talking about designers and design leaders in the US. There's quite a few points where this "bias" was very clear, because it can't be applied to my environment (central Europe).
There were some parts which were so shallow they might as well have been left out of the book. There is a full chapter on design crits, but only 1 1/2 pages on continuous feedback. I often compared the contents of the book to The Effective Manager book. To be honest, the comparison might be a bit unfair, but the guidance in Liftoff compared to this one book is sometimes very underwhelming and disappointing.
Overall, Liftoff is still a good, modern read, which gives a good overview over various topics. The sources and further reading suggestions are sound. I just wished the book itself would maybe focus on less things and give more meaty, actionable guidance. It's too often so shallow that I just can't rate it any higher than a 4/5 and that's generous. I would always have to add for most chapters "but you should also look into book A/article B" which isn't a sign for a truly great book.
If I could I would give 3.5/5 points, but giving 3 didn't feel fair, so I went for 4/5.