Why not just make it more customer-friendly. It isn't that hard.
Most customers care about the cabin in which their ticket gives them a seat, not at the letters their fare basis. I'm not searching for a fare basis, I'm searching for a first-class seat.
You put it together in four sentences. There are not only FTers booking flights on .bomb out there. Imagine the poor secretary booking such a "scam" itin for the boss. Messy Air to ORD/IAD, continue on TED and as reward a F seat on ExPlus for the short hop back. If Mr Boss is non-MP he will be granted an E- seat

. A warning message, and I mean a WARNING message no fineprint will at least wake up semi-experienced bookers