Well, we played at the same place last night, and with the same issues. I spoke to the drummer briefly about playing some newer songs. We talked about a few songs that the venue was playing while we were setting up. So, I may bring up my ideas if and when the band has a rehearsal. I don't thing the guitarists will be interested, though. We had a good 5 or more minute guitar battle on one song. We didn't have a good crowd and didn't hold the crowd we had. My feeling is that I'm just going to have to accept things as they are and not worry much about it,awhile looking at other opportunities.
Part of the problem bands have is that the average person is not all that good at marketing. People think they know what people want, they think people want the same old, same old, so they play it safe, but people don't want that.
What people want when they go out is an experience. They want a solid reason to get off up their butts and leave the house to go somewhere else and spend money. Most bands don't have a clue about this, so they make no effort to deliver it, and your band is a good example of what results in that situation.
There are so many things wrong with this situation, and somebody several pages back gave you a pretty good primer on how to do it right. But I'll take just one example. The music you play on breaks. Why would it make sense to play the same music the band is going to play? All that does is create ear fatigue for the people who might otherwise enjoy what you do. You've got them sick of hearing the blues before your blues band even gets started. Where else do you see this done?
The promoters who do this for a living have this figured out. There's a reason these guys can sell thousands of tickets. Go to any high-level show in your area and listen to the music that's being played when the band is not onstage. It won't sound anything like what the band is about to do. There's a reason for that. When the band starts playing their style of music, it's part of the experience people are there for, and hearing that music coming from that band gets them excited about the band.
Playing the blues on the PA is just reminding your audience that they could have stayed home and heard this music.
There's so much more to unpack but the real salient point is that most musicians are lousy marketers and you probably can't convince them otherwise. If they're really stuck on a way of doing things that isn't resulting in bigger and better audiences, I don't think they're going to pay a lot of attention to the things you have to say. You might be the smartest guy in the room on this stuff, but the stupidest guy can't understand that and he's just going to stick to his guns.
So, long way of saying this sounds like a losing battle to me. If you can't convince them to market themselves better over 17 years, it's not going to change. But there are people out there who do get it, and do a much better job at promotion than this crew is doing. Time to start looking for those people.