One thing that drives me crazy is when liturgies just have too much. I have often said, at my funeral, if the presiding priest sings the Eucharistic prayers, I am coming out of my box.
Case in point: the English choir at my old church. Of the four times a parishioner can sing - processional, collection, Communion, recessional - the choir mistress would only have parishioners do so during the processional and recessional, most of the time. The other two times was for her to put on a show. And they did - for awhile, I heard so many "spirituals" that I remarked to my husband one Sunday, "Oh, look - we're getting 'Song of the South' again!" The Sunday she brought in drums, both the sacristan and I looked at each other with raised eyebrows.
And when the choir finished its performance, the congregation usually applauded . . . all except me, my husband, and the sacristan. Sorry, I was raised differently as to how to behave at Mass.