Basically what has happened, we've all moved with the times, rightly so.

30 years ago, I thought I was the "bees knees" with my portable Hammond X5 (with pedals going through a small bass amp) and an Elka rotary speaker with a Roland SH 2000 on top. Just add a drummer, a great sound.
Just imagine turning up with that gear to a gig now, we'd be laughted off the face of the earth.
Like them or not, we will see new arrangers appear for years to come. They can deliver a very slick modern sound.

Frank