I would love it if LabVIEW had logical constants, similar to what other languages have. Basically, a logical constant is similar to a variable (i.e. it's a value which is assigned a name), but its value is set at compile time. CONSTs help code readability.
In LabVIEW, a CONST would basically be similar to a global variable, with two differences:
1. It would be read only (so no race conditions, everyone can relax).
2. Changing the value on the front panel of the CONST VI will automatically require the user to save the VI, without needing to manually set the new value as the default.
Today, you can implement these in LabVIEW using all kinds of methods, but non of them is as convenient as this.