The main argument against a NPC is that people will party less, and that less people will make those classes in the future, and that people who already made those classes will feel unwanted/that they wasted their time.
Make some friends that are on a lot, share the buffing account with them (with nothing valuable on so no one will steal it). That way you can buff each other if you don't want to party together.
Wrong thread circe? Or I just don't get what you're saying.
My chars: TPC / Tjuven / Dansare / Sinne / Magiker / Byracka / Krigare / Andreas