"Your scientists were
so preoccupied with whether or not they
could, they didn't stop to think
if they should" - Jurassic Park
Yes, this pavement looks more realistic. But at some point, I think it's important to pull back and question if stuff like this is (1) the best use of resources, and (2) a good idea regardless of point (1).
Magic Kingdom has always been a fantasized (i.e., not
entirely historically accurate) version of real worlds from real times (well, I'll have to ask you to give me the benefit of the doubt with Tomorrowland!). Main Street is set in an 1890's small mid-western American town. It avoids showing the dark side reality of the Gilded Age where 1
1 million of 12 million families were below the poverty line, and crime and filth were common.
Draw a line from 0 to 1, where 0 is fiction and 1 is non-fiction (i.e., reality) -- an intentional crack line in pavement gradually takes Adventureland a little farther from 0 and a bit closer to 1. I think everyone would recognize that the extreme point along that continuum -- where Adventureland has boarded up windows and (intentionally) has mosquitos everywhere -- is going too far.
...But I'd argue that the point of "going too far" hovers
not terribly far from intentional cracks in pavement.