IRROPS also works in your favor when something like I had tonight: I had an outbound scheduled for tonight, returning Tuesday on a separate ticket (I know, I shouldn't have bought a separate ticket, but I did). Stuff changed and I no longer planned to fly the outbound or return, but both were ~$200, so basically throw-away if I didn't use them. I never cancelled the tix, hoping something would go awry before departure. The first segment tonight delayed and I would have had a very tight connection in CLT. I called the ExPlat desk and they cancelled/refunded both my outbound and return without an issue since a misconnect was likely