It depends on who you ask. Some guys feel the OHP is necessary, others (namely Shelby Starnes) don’t feel the OHP is an integral part of a training program.
The best thing to do is run a program with and without and gauge which one is working best for you.
I’ve incorporated landmine presses which have been talked about at length in articles and forums here. They are a little easier on my shoulders, but still allow me to include shoulder pressing into my workout.