I concur. The whole "request payment" feature and the expiry time stuff really needs some sort of rework. The number of "HALP!!!!111!! MY PAYMENT EXPIRES IN 1 HOUR"-type threads we get from people that generally contain statements like "I just installed Electrum and have never used it before" would indicate that it is indeed quite confusing for new users who are attempting to receive their first Bitcoin payments.

The question remains tho... how should it be changed to make it less confusing whilst maintaining the same functionality?