Is my hairline too harsh? There are also many missing areas that need more hair (photo)

The problem I see may be more than just missing areas of hair as the hairline is too ‘regular’ and does not reflect a random placement of grafts. Also the grafts in the frontal hairline are multi-haired grafts when they should be single hairs. A thick 1/4 inch layer of single hair grafts create is a transition zone in front of any thicker hairline so it does not appear like a ‘line’. Your transplant, is, unfortunately detectable and needs to have a transition zone built in front of the multi-haired grafts so that nobody can tell you had a hair transplant.