David,I thsink worship includes music, but we worship God in prayer, and in reading and hearing His word.
I agree that some modern hymns (thankfully not all) are repetitive, and the words don't have much depth of meaning.
I have never been in a church which has somebody called a worship leader.
I refuse to refer to the music director as the "worship leader"
In fact when someone says so and so s the worship leader - I respond with - "Oh so he is the senior pastor?"
and by the way - EVERY part of the service is important -
That includes the offering, announcements, and as you mentioned prayer, Bible reading, ect!