Currently, the option to change "scheduled ship date" is one of the last options available. This is dangerous because it is quite possible to miss this step and accidentally process day-of, it being on the same window as the final processing step. One or two labels is no big deal, but if you process a thousand labels this becomes quickly problematic. I would suggest putting the "scheduled ship date" option before the final processing tab.
This may also solve my second problem. FedEx "saturday delivery" is only an option if a label is processed and shipped on Thursday. It would be greatly advantageous if we were able to process, for example, on Wednesday, for the "scheduled ship date" Thursday, and have the option to choose "saturday delivery". Being that it is processed to ship on Thursday, there should be no reason why the option for "saturday delivery" isn't available.
Lastly, the option to split an order inside a batch would be incredible.