Worship is about pleasing God, not about pleasing ourselves. I think chapter 6 of Micah has something to say about this...
7 Will the LORD be pleased with thousands of rams,
with ten thousand rivers of oil?
Shall I offer my firstborn for my transgression,
the fruit of my body for the sin of my soul?
8 He has showed you, O man, what is good.
And what does the LORD require of you?
To act justly and to love mercy
and to walk humbly with your God.
So what does God expect? A beautiful hymn? A fabulous show? A great band? Good Lighting? Great stage presence? Lots of illustrations? Nice flow? A huge offering? And on and on...
This is what God expects, this is what is good -
Walk Humbly with your God.