This applies to all chapters, so I'm posting it in the general forum. There have been a lot of comments regarding the number of professions, creatures, magic schools, etc. Without going into the arguments for or against, I feel the rules would benefit from some text in the relevant places encouraging ("permitting" if you like) expansion by users. Perhaps with some guidelines, e.g. spell power levels or when a new skill might be worth adding to a campaign.
Personally I favour limiting the scope of the basic rules, but the above would apply in either case.