The defroster traces can be repaired. There are kits you can get to do this. Some glass shops also offer this service. It can be done in DIY mode, but you have to be tidy and follow the instructions. If you have that many out, see if you can get an estimate for the repair. This also may be covered by your insurance as this may pose a potential safety issue. It wouldn't hurt to ask...
2000 Dodge Grand Caravan SE