I am not a person who would ask for too much cant but not seeing any body called basher or berk is just depressing. They put Ignus (fire mage from the game) as a part of the Sigil as well as, I think, other nods from the computer game (as it is such highly acclaimed thing), but it is just it - nods. It is mere echoes without everything (artstyle of the book, writing style, anti-authoritarian nature of first Planescape) to make it work. Ignus is merely a tourist attraction and for people who liked the game to point and say 'Heey, I know this guy, he was in the game!!!"
IMHO, it is pandering and / or brand recognition and/or brand consolidation, given that Black Isle Studio created many of these characters wholecloth and they weren't the part of the initial TSR books.
And they are even more cowardly than I thought. Hands of Havoc is 'controlled burn', and while initially it is described as Revolutionary League in all but name, the next paragraph immediately pivots them into, basically, artsy innovators in a way of severely defanged Xaositec who only target certain 'outdated and oppressive' laws, but heavens forbid they will be dedicated to the actual idea of freedom. Do graffitti, wear rebellious clothes, this is all this faction is good for. No risk, no extremes. Revolutionary League itself is a minor faction barely mentioned, because we cannot have revolution in our sleek 5th edition book even as renamed main faction.
Blood War mentioned only four times, almost tangentially.
Basically, as I expected, bright but hollowed shell slapped with branded reminders of its departed soul.