Bill, I understand your logic, the frustration with band practices, drunks, "no-shows", etc.
I too don't have the patience for a lot of that stuff anymore.
Around here, versatility gets you work. I've done what a previous poster suggested. For "group" jobs, I add a couple of horns and a singer or guitar player.
They're all "killers" who can handle the job with no rehearsal at all. It's the format that makes this possible. We (I) do a verse, chorus, and then someone does a verse. I'm back on the chorus and "we're outta there".
Thing is, this only works when I control all aspects of the gig...the instrumentation(with key alterations to make the material comfortable for the extra players chosen)...material, etc. If all fails, I can handle the job on my own.
Trio jobs are different...my grandson and son....rehearsal is a joy.
Large jobs that pay lots are easy. I get a music professor/friend to rehearse the band. Most players are Masters candidates. I come in one afternoon to rehearse my part with the group ONCE, and we're off to the Derby party...whatever.
I would be bored silly just doing singles on an arranger, but, thankfully, I'm back doing guitar singles, piano singles; vocals with other groups, etc.
There are trade offs, but at near retirement age, I'm still cranked at playing in a variety of formats, with a variety of pro players, when there is budget.
This way, "an enjoyable time is had by all".
The End,
Russ