Even today, many of the innovations were directed at time keeping accuracy. I remember being at a dinner hosted by young watchmakers Gruebel and Forsey. They showed charts that demonstrated that they were more accurate with their tourbillion by a second over conventional models. Yet they were not perfect by a long shot.
George Daniels insisted that his coaxial was as close to perfect as possible.
My musing were more geared to complications but this is an excellent diversion.