Asmus sorry to see the unfair Facebook comments you are receiving.
The underling sculpt seems to be good and it's the paint and hair futzing on the rooted that are throwing it off. I agree with everyone's comments that the beard needs thickening and the shape of it changed subtlety with the paint application. I also think the eyebrows should be lighter in colour. Please don't lower the hairline that can be dealt with hair futzing.
I also agree with the the comments that if possible it would be great to show Boromir's ears poking through the hair. On the sculpted hair head, the front centre parting would look better if it was more rounded and less of a 'V' shape (someone else mentioned this earlier). Hair colour on the sculpted might look better lightened.
So please don't change the sculpt as it is really good and it's just the paint application that is hiding the likeness.
I wish to echo the comments that I hope you make the haired head available separately as I would like both head options if possible.
Keep up the good work Asmus