no, Telltale shouldn't take TSL into consideration. The Silver Lining is a fan's dream, and is catered very much to the fans, absolutely and completely filled with nostalgia, and even forcing the story and changing some of the facts to make it feel as if the whole series revolved around the same thing, making connections that only fans would understand, and taking the series to a step beyond King's Quest VI, in terms of a more serious and elaborated plot.
The plot of The Silver Lining works in a way so that we could bring back all of the characters that we learned to love and hate, and so that we could reference each one of the games in the franchise somehow, and to introduce that "epic" factor that many fans would expect from a final episode. The choices for TSL were all made around the idea of giving the fans the opportunity to spend one last time with all their beloved characters and to really get to know them. --again, thinking as fans, what would a fan's dream wish to see in what we wanted to do as the final episode of the saga.
But for a reboot/commercial game, things would need to be taken in a fresh new direction, and go back to the roots of King's Quest, where simplicity was key. Where it all revolved around the simple task of exploring a new land, a simple goal, and a simple villain, great puzzles, death sequences, and the enchanting idea of being one of the royal family members in a new quest. But, again, and like many have said here, simplicity is key. Where all goes back to the very roots of fairy tales, folklore and mythology, and, of course, adventure!, and where we can enjoy being once more with the Daventry family.
Director, The Silver Lining
PS: And can someone remove the Telltale logo from my profile? I don't work here anymore