So far, King's Quest 4 is the only game in the franchise that does not have a VGA version or remake. AGD did a fantastic job with the previous three games, but they have no plans to remake the fourth game.

I've read of other attempts to remake this game, some previews are even available on Youtube, but they were all cancelled.

It's disappointing that AGD won't be continuing the story of the Father by remaking the fourth game. If they had, I would have liked to see the following:

-Continuing the story of the Father, focusing on the second curse.
-Voice acting
-Better fleshed out characters
-More areas to explore
-More puzzles to solve
-More quests to undertake for Lolotte
-More characters to interact with
-The unicorn is now capable of speech and the subplot around it ends more positively as it forgives Rosella, understanding that she was Lolotte's unwilling servant
-An extended introduction where Lolotte attacks Genesta and steals her talisman
-Special awards earned at the end of the game like in KQ 3 Redux
-'Meanwhile' cutscenes that show what is happening back home in Daventry
-Pandora's Box now plays an important role in the story and in the Father's new plot to bring about the new age. Failing to secure it in the crypt by the end of the game results in his plan succeeding, overriding the ending you would have gotten if you had secured it away.
-Multiple endings with multiple variations, even more than King's Quest 6

Ending variations

-Time runs out and both Genesta and Graham die (Lolotte is either alive or dead)
-Graham dies (didn't find the fruit or found and ate it)
-Forced into marriage with Edgar
-Graham lives
-The final location of Pandora's Box (either in Rosella's possession, in Lolotte's castle, or secured back in the crypt)

All in all, it would have been a fantastic sequel to KQ 3 Redux.