It would be nice to see some new characters that had faces showing facial features such as light laugh lines, and light crows feet that you would find in a character in their mid to late thirties or early forties (depending on life style). Still look good (body and face) but with just a hint that they are starting to age. A good example is the actress Stana Katic from the Castle series, she was 34 when she did season four.  Look at her facial features in the series itself and note the corners of her mouth and eyes.