We've seen this many times before - quality components built up into sub-par wheels by a major manufacturer. Usually in order to save cost, or simply to achieve light weight for the "Internet arms race"*.
Stuart was riding around his back yard on his 2 year old Roval Control SL carbon XC wheels when all of a sudden three spokes broke simultaneously. He was seriously unhappy, as he felt the bike had never been ridden hard, nor very often. He came to us to rebuild the wheels, and relayed stories of replacing corroded nipples, and unhelpful shops who simply encouraged him to buy a new pair of wheels.
We've rebuilt Roval product many times before so understand their strengths and weaknesses. The hubs are pretty good. The carbon rims are super light (so make sense for lighter riders only), and the spoke and nipples choice is often bizarre. In this case super super light spokes and cheap alloy nipples.
By now, most of the nipples on these wheels were so corroded they could hardly be recognised, and the spokes rusting and breaking.
We rebuilt the wheels with DT Competition double butted spokes on the front wheel and a combination of DT Competition and DT Champion plain gauge spokes on the rear. A much smarter selection of black brass nipples ensure that they wont corrode in the future.
The outcome is a set of wheels that weighs less than 65g more than they came from the factory, but will be very reliable, and significantly stiffer. They'll also last for years to come. A pretty good result really!
* In the bike industry, a war is going on. The internet is where the frontline trenches are. The war is about weight. Advertising the lowest weight bike/component/accessory seems to be the goal. Weights are so commonly quoted on the internet, and therefore influence the buying decision of the uneducated (in fact, they are almost always optimistic). We agree, lighter weight is better, but not when it compromises reliability or performance. It often does (in a world where you are encouraged to buy a new bike/component/accessory as often as you can afford to or a finance company will let you).