Haven't had any success using a drummer WITH auto drums. If you get a really good drummer, he can easily replace the kb drums, but then you have to either play lh bass or hire a bass player. Then you are "reduced" to being a frontman or sideman.
When a job requires more pieces, I add a fiddle, steel guitar or guitar player if it's country. I add a sax or guitar player if some other type of music is dominant. I'm very fortunate to have several world-class guitar players to choose from. They can play anything and play it great!
Last year I did one job with a sax, guitar player and piano player. I had trouble finding something for ME to play with my right hand! Had to sit on it some to keep it out of trouble.
Later,
DonM