When I learned that the Gargantuan book contained more than the long-awaited Archangel (it is currently sitting in Denver waiting for me to get it), I was excited. When I saw the Warspear chief, I was twice as excited. The warspears have been a staple in my legion armies since I purchased them. They are tough and I really like them.
The other models are the Unit Attachment for the striders, another unit I took a liking to. Their small number (6) prompted me to get a few extra models, thus the officer & musician.