Insurance and Signature Options?

Finally was able to get a pre-paid shipping lable created for the custom box sizes and weights we work with. We are not able to use this plugin however since we require insurance on the items we sell and also require a signature confirmation. It appears that all you can do with this plugin at this time is to select either a flat rate package rate or manual setup your own box size and weight and then get a pre-paid label however there aren’t any other options that USPS offers such as getting insurance on the item or signature required. Are these going to be added at some point?