So let me get this straight. You don't like to rehearse. You're in a band that doesn't like to rehearse and you are complaining about not making enough money. Sounds to me like you are playing for all the wrong reasons and trying to take short cuts. Changing the band leader is not going to change this. The only way to get better paying gigs is to rehearse and gig as much as possible in order to generate a following.
Wrong wrong and more wrong. I play fill-in gigs all the time. I have done dozens of gigs where the band made well over $2000 and I NEVER MET THEM before THAT NIGHT. People who rehearse once a week and play out once a quarter are either terrible players, scared to play out, or just doing it for fun (nothing wrong with the last one either). I know a great singer/band leader around here who can't keep band members because he wants to crack the whip on them and practice ten times for every gig. It's just not worth it if you can play at all. If you can't, do the rest of us a favor and go race cars on the weekends or something. Or just wait until YOU are ready BEFORE you join a band that is trying to gig.
And taking crap money gigs (again, if you have reached ANY level of professionalism) is dumb. This BS of "getting your foot in the door" or "exposure" gigs is a thing of the past. When I started playing out in the 80's, those things worked. Why? Club owners actually MEANT it when they said "Give us a good deal the first time and if you do well we'll have you back for more money." These days, it's just a ploy to get desperate dopes like the OP's BL to go along with it and play for nothing.
Wake up guy. You're beating your head against a wall if you are still playing the game of rehearsing dozens of times and playing "exposure" gigs. You are being played, either by your band or the club owners in your market. Either that or band practice is your poker night away from the house. Period.
Either you and your band mates can both play AND do their homework for a FEW practices, or none of you have any business being there in the first place.
Sorry for the rant but people who try to get me to practice a dozen times for a stinking gig get on my nerves and Kmonk just happened to yank on the very same nerve.