Ability to change default Price Tier

Would be good to be able to change the default Price Tier that is assigned when creating a new customer.

This would be a small function, but if you decide you want all your new customers to be created with a new price tier it'd be easier to set a default rather than always having to click the drop-down and the preferred price tier.

Perhaps just a drop-down list above the price tier list in General Settings to say "Default Price Tier".

Thanks.