Hi!
We did for one of our customer small changes of nop which probably will be useful for others.
1. add short payment method description
One of our http://shop.dev-partner.biz/content/Images/uploaded/nopCommerce/nopCheckout.png
2. Add SkipPaymentInfo setting to the plugins(PaymentMethodType.Redirection) settings pages. It's usefull setting for payment plugins like Payments.PayPalStandard and all other PaymentMethodType.Redirection plugins.