My bad—meant to say un-numbered, like other arterial roads such as Hualapai and Durango, rather than unsigned implying it does have a road number. Could be like Summerlin Parkway someday though, in that it would receive a state route number if it ever becomes a freeway like Summerlin Pkwy did. For the meantime it's maintained by the city.

That's true about Hollywood Blvd. I think the new road will do just fine but future-proofing roads when you can is always good. Nevada seems to be on a streak of building important connections like these as 35 mph arterial roads rather than 45-55 mph highways like one would expect (Silver Copper Crossing in Laughlin for example). In an ideal scenario in my opinion, there'd be a Sheep Mountain Parkway-like roadway being built instead of the Wiesner/Hollywood connection to take future higher-speed through traffic off the local roads. Since there's no beltway here, all traffic to Sunrise Manor is forced along Nellis, including quite a bit of truck traffic going to the Pabco facilities, but a project like this would almost certainly face more opposition than one like Sheep Mountain Pkwy since this is a more well-established area and not one that's actively sprawling outward like Skye Canyon.