Currently  with  2.2.1 and higher, a case class that is registered can denote possible missing fields as Option[field]. Sometimes we have default values on case classes and it would be good if a collection can be read into a case class so the missing fields are replaced by the defaults

for example: 

case class Reg (name: String, mark: Int, loc: String, date: Date = new Date())

collection Registration {"name": "David", "mark": 75, "loc": "The Gragg" }

I would like the collection Registration to be read into Reg as

Reg("David", 75, "The Gragg", new Date())