There is no room for dabblers or hobbyists, which cuts off a lot of character concepts. Since all non-combat skills have been reduced to "Just write it on your character sheet, it doesn't matter", there's no way to focus on improving those aspects of your character, or competing with them, or using them in any kind of challenge or test, since they have no mechanical value. (You're a "master brewer"? Does that mean you can identify any kind of ale by taste? Fix a complex brewing mechanism? Train an apprentice? Out-brew an NPC? No ranks means no rolls, no rolls means it's all handwaving, and any of your fellow PCs can perk up and say "I'm a master brewer, too!" and have the exact same skill as you. (Oh, and they're also a master sailor, a hardened mercenary, a skilled blacksmith, and a tapestry weaver. Hey, it's all "written down", right? What MORE do you need?))