I redshirt sophomores almost every season. Because i offer the kid starts and minutes his freshman year, telling him how great he is. Only to sit his *** on the bench for the whole year the following season haha.
But sure it's worth it. I don't redshirt anybody that loses WE. So it's always worth it. The only case where i would redshirt players that lose WE is the senior thing. They drop to 1 WE. But.... if the reasons are beneficial, why not?
If you have one senior that's a PG, and you have 4 solid JRs (SG, SF, PF, C) and next season you can make a title run.... redshirt that senior PG with a quickness. He'll have A+ IQ all of next season, and you're on your way to title contention.