If I set a customer in POS 2.0, then click 'Return Transactions', it would be good if the transactions returned in the 'Search Transactions' window were filtered to only the transactions from this customer.
There is similar functionality when using Recall Orders - i.e., setting a customer before hitting Recall Order means the orders shown are only those for this customer, rather than the Orders for all customers.
A similar feature for Returns would save a few clicks when processing these without a customer receipt/item barcode to go off.