If the wheel has a lot of miles and breaks a spoke then you will probably see an increasing number of broken spokes occur with some regularity. Best to relace the wheel with all new spokes and nipples. If you are seeing cracks check closely with a magnifying glass. Sometimes you can get a crazing of the anodization which may not be a problem. BUT if the cracks are around the spoke hole then go for a new rim...insurance. Medical bills from a crash are very costly. If you have gotten a lot of miles of hard riding with those wheels then retire the rims, spokes, and nipples...rebuild the hubs...check the cones for pitting and build up new wheels. I would go for a wheel with a stamped eyelet. This will takeup and distribute the spoke stress over a larger area and prevent stress risers and cracking.