Earlier quoted context omitted.
Hovering the mouse was an essential mechanic in all the best point-and-clicks. Games that don't give a hint that an object is interactable on hovering are impossible to play. Games that highlight all interactable objects from start are boring and cut all the fun of discovery. That could be a a reason.
What about 'drag-to-hover' and 'tap-to-interact'? I don't feel like this is an unsolvable UI problem, when some core apps have 3-finger-pinch-and-drag-while-swiping gestures.
Worth trying. Startup idea: buy the rights of a critically-praised-comercially-failed adventure game from the 90s, port it to iPad with this mechanic. :)
I would play.