The conflicts sound all too familiar. Our parish just hired a new music director after we coasted with a leader who picked tunes and handled scheduling on top a day job and other church-related responsibilities. The current MD is well-aligned with the pastor's vision, but some conflicts occasionally spring up with the old ways of doing things. (The pastor is relatively new, too.)
Overall, I'm glad that I'm "just a follower." Put the chart in front of me and I'll do my best. Sure, I have favorite and despised tunes, but it's a privilege and responsibility to play. The tunes I dislike might be someone else's favorite. And the _congregation_ comes first. (Ministry = Service)
I try to support the leadership and to encourage the rest of the team members as much as possible. At the very least, we all have that little voice inside that criticizes us, etc. and we all need support and encouragement.
Finally, if it stops being fun, then maybe it's time for a sabbatical. Better to take a break than burn out.
All the best -- pj