I have a few thoughts.
First, is that the lack of 4th and 5th tier wizard advanced classes and spells is severely angering me. My understanding of the magic expansion was that it would finish off the "missing" magic careers. This does NOT do that. In fact, it shamelessly sets up parties with a mage to purchase yet another expansion. Don't get me wrong, I do not mind the limited release scheme that FFG has developed for 3e, but this is gratuitous and shameful.
Second, the chaos book covers a much larger range of options than I was expecting from this release. In fact, the enemies and corruption points will go a long way to making the game more deadly. This somewhat ameliorates my severe rage at seeing an incomplete set of advanced classes and spells for wizards in the magic expansion, but not entirely.
Please, finish what you start FFG. Don't release complete sub sets of the game in bits and pieces to force your players to purchase continued expansions just to flesh out one set of advanced careers. You're not putting out of expansions fast enough to keep up with character progression in the game, which angers players as their characters can't advance to the career they had assumed would be available. Which in turn causes groups to set the game aside in favor of more finished products. You also piss off gm's who have to continue to shell out for expansions just to flesh out the parts of the game they actually want to incorporate. I would much rather see a complete magic expansion with respect to wizards and separate expansions for the chaos enemies, this bit-by-bit approach. At least that way I would know what I can expect in an expansion. As it stands I'll be waiting for complete details on a 3e product post release before even considering investing in it.
TLDR: While the expansion contains a good amount of content, please release expansions that are less a conglomeration of releated topics in favor of completely fleshing out a single topic.
: if WFRP would have been a first edition, that would introduce us into a new setting, then I guess people might not have noticed such a lack of advancement options and taken the system for what it is.
, without the existing material, especially the huge amount of fluff about the world and the many excellent adventures that can be converted, WFRP 3rd edition might have been a bit too light, so maybe there is something to the complaints about the way the core set and the first expansions were handled?