Since photography is essentially a visual medium, it's sort of cheating to bring in the tactile element because you are adding an extra sensory experience to the viewer.
So to me, naturally adding an extra element should increase the enjoyment but most prints are framed and hung so they can only offer the visual experience.
In all human experience, adding more sensory elements bumps up the intimacy and reaction to something.
In a practicality point of view though, most people don't have the luxury or adding more sensory elements to their photographs because most photography is frame and touching is frowned upon for obvious reasons. (
Size also can enhance a print. Because the size of a print is really all about viewing distance, eg: smaller print closer viewing, larger print further viewing, so by definition a smaller closer print is more intimate.