About the only thing I don't see in this thread that may be useful:
You currently can hit K8 for extras menu, and then K8 again for card reload for the prepaid redcards.
Except, that only works at a service desk register, card reload doesn't exist in the extras menu on a normal register.
To do card reloads at a normal register it must be done mid-transaction.
Once you've scanned at least one item Card Reload becomes K8, so what I've been doing is typing in 090990999 (aka no barcode) for a arbitrary amount, then hit K8, add to their redcard, and then scroll up and void off the no barcode item before hitting total.