Worship has been really fun. There are things you can do in larger gatherings of worship that you can't do with 10 or 30 or even 100 people - and vice versa. I have a hard time believing that large worship is dead. Something about the modern, programmatic, Willow Creek and even Ginghamsburg church doesn't really set right with me. However, If the world is becoming increasingly unchurched, then it will become more and more important to get to the fringes or outside the church, where the majority of the world population resides.
Excellence is the higher value, more than creativity and expression.
However, for the artist, excellence is subjective. Small groups also don't somehow work for me any more. I like the idea of small gatherings of people who meet to study or pray or serve, but the small group concept seems very programmatic to me. It presupposes that there will be a large group somewhere, but I don't know if that will always be true. It has a different feel than a formula, and small groups to me often feel like a formula.