The only real disadvantage of a peripheral winding system is that it's inherently less efficient than a full-rotor system – the peripheral rotor has to be geared to the automatic winding gear train at the inner edge of the rotor, which reduces leverage. The problem is severe enough that until Carl F. Bucherer came out with the CFB A1000, no one had successfully managed to put a peripheral rotor system into full production – several brands had experimented with it in earlier decades (including Patek Philippe) but all seem to have more or less decided that the game was not worth the candle. It's interesting that the CFB A1000 and its subsequent variations, could probably not have achieved the success that they have were it not for modern high-precision manufacturing techniques, and modern materials. From a real classicist's perspective, a watch is beautiful to the extent that it embraces traditional watchmaking materials and techniques, and avoids anything that smacks too much of high technology; it is also true, however, that watchmaking has relied increasingly on industrial processes and materials at least since the 1920s, and that much of what's made watchmaking interesting since the beginning of the 21st century would have been impossible without those processes and materials (including LIGA, CAD, CNC machining, wire erosion, and silicon fabrication).