Freddy was the best when the comedy part was Freddy being a god damn creep with his jokes with no intent to make anyone laugh but himself. Things started to change in Elm Street 3. In Elm Street 4 he was an almost full comedy character and finally in Elm Street 6 he was a complete caricature who had tons of kids as fans who laughed at his jokes.
All they would need is to make him be someone who jokes while killing kids because he's a monster instead of telling jokes while killing kids to make kids laugh.
They tried that a bit with the remake but the script was pretty bad to make it work. I've heard that quite a bit of its bad quality was because the producers wanted changes to the first cut, though.
I really liked some of the last 10-15 minutes of it. I thought they managed to make Freddy an actual creep of a monster for a short moment there.
The doctor lady on Elm Street 3, sure, but are you saying that even if that Doctor Lady turns into a full blown burned up freakshow there wouldn't be anyone to turn her down?