Good luck with changing anything or anyone from within; it is lilkely to cause you more problems than you can ever imagine, and the congregation overlords (elders) will quickly 're-direct' those you are attempting to help.
I'm not saying it won't work, but the chances are extremely small. One reason I became disillusioned as an elder is because I naievely thought I could lighten the load and affect some change, even minor, from within. Didn't work. Not likely to work with you either. You would be better served quietly exiting with you and yours.