I think BYU should continue to reserve the royal for special occasion. Once the royal blue becomes an every day thing, it will lose it's novelty and nostalgia and people will realize how hard it is to wear royal blue all the time. My first two years at BYU were pre-color change, and I can tell a lot more students wore BYU stuff in everyday life long after the switch. Right now, I'm convinced a lot of people wear it for the nostalgia factor--believe me, having loyalties to both the Twin Cities and North Side, my Cubs gear gets a lot less wear than my Twin stuff because it's hard to pull off wearing royal
all the time. If anything, I would prefer BYU reserve royal blue for in-state rivals and occasionally bowl games.
If I were to have one gripe with the navy blue (at least as implemented by the football team) is that it is too dark. They should go one shade lighter--right now the football uniforms especially are midnight blue like the NY Yankees. I think they should go with a lighter blue, more like the now-replaced SD Padres hats. For reference, here are some shades of MLB blue:

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http://www.minorleagues.com/media/LC9432108.jpg" alt="" loading="lazy" style="max-width:100%">

http://www.minorleagues.com/media/LC9431108.jpg" alt="" loading="lazy" style="max-width:100%">

http://www.minorleagues.com/media/LC943042014.jpg" alt="" loading="lazy" style="max-width:100%">