What's the most common change order and why?

It seems like people are always asking about changing their order, wondering if their changes went through, or asking about missing the email about the last chance to change their order.

Can someone from Nicks say what the most common change order requests are?

If you're a customer, what did you change on your order and why?

Also, maybe it's just me, but there are very few instances where I think that I'd change my order because I usually try to make sure I'm satisfied with the details before I plunk down $500-1000+ for a made to order boot. So this makes me curious about the answers.