If respecting the legacy would give sucess and good sales, The fallout games of Bethesda, the last Final fantasy games or even the GTA games should´ve been failures.
People do not need nor want to play the same games again, unless it´s FIFA or a game that precisely wants to ride on nostalgia.
That's ridiculous literalism and misrepresentation to fabricate a lame false dilemma. Developers can show respect for the legacy of previous games WITHOUT copying a previous games. The Fallout games prove that quite well. Showing respect for the legacy of a game =/= Copying a previous game