I do really like the aspect of different classes just having different exclusive crafting recipes. Like the bowyer knowing how to make the best bow, and the tailors knowing how to make clothes just makes sense and it great when you play with a group and you're all able to contribute their specialties but that's only online. In solo, I hate specializing even if classes have a miniscule negative.
I think the clockmaker needs an exclusive craft. Shoot, give them an actual clock (or something pretty useful to be able to make : P).