Holding the look. That is a great thought and goal, if the restoration is valid or the remodelling job is great.
In my opinion, the responsibility to hold the lookfirst belongs to the club board or committee's charge to write out a specific set of criteria and conditions that describe the ideal or desired maintenance meld. Things like the sq ftage of the greens after remodel-restor and the theme of the bunkers in terms of sand specs, edging style, etc. The book ought to contain a digital library of photos that clearly depict the basic look when they get it restored or remodelled to the point they are proud of. This isn't to say that natural processes are to be curtailed or ignored. A certain amount of sand build up from bunker blasts, or seasonal weather conditions, disease blight and treefalls etc., are to be expected. One has to understand that at some point over the years, tweaking may need to be done. But that is a very long term consideration. Green contouring, surrounds maintenance practices, bunker placements and surrounds maintenance practices, and fairway widths are all achievable features to generally preserve. It is not possible to spec timing or types of applications nor cultivars to reseed, overseeding cultivars, plugging or reseeding practices, etc. That is why you pay the super the big bucks.
Then, it is up to the super to fully understand this. He needs to communicate to the committees when various cultural practices are done and why.
I want to make special public note of one such super, who has worked with his club leadership, the restor-remodel archie, and has the full grasp of the "hold the look" ideal. Scott Schaller of North Shore CC in Menasha WI. He ought to have a magazine crew come down and do a special on his work and talent.