Some of the pavement installed at Disneyland under Paul Pressler was an improvement, and some of it wasn't. In many cases, though, the objective of the initiative was to conceal trash on the streets so that Disney could staff the custodial department with fewer people.
In the past, one of the three most oft-cited reasons guests returned to Disney theme parks was the sense of cleanliness and orderliness that each place provided. So, something very subtle has potentially been lost by removing all the perfectly-painted and perfectly-smooth walkways in Disneyland that were all kept perfectly-clean.
It might be a good idea for Disney to reinstate, in a few strategic locations, some of these old-style walkways in order to impress guests with the degree to which Disneyland keeps itself neat, tidy, and pretty.
Looking at some old pictures and films, one is struck by how spotless all these simply-designed walkways look.