Is they don't tour as a whole group, and so they never get to perform the songs they release as NCT U in concerts. It's crazy how fans don't get to watch some of the group's best and most popular songs (such as Boss, Make A Wish, From Home, 90's Love etc) and some of my personal favorite bsides (such as Round & Round, Faded In My Last Song, Raise The Roof, Light Bulb, OK!, Birthday Party etc) performed live in a big stage.
Touring as a whole group is unimaginable so I think the best solution for this would be if the fixed units start covering some of these songs in their own tours. Like imagine a 127 version of Make A Wish, a Dream version of 90's Love and a WayV version of Baby Don't Stop. It would be perfect.
These songs deserve so much better than being shelved as soon as everyone goes back to his unit.