JUst back from a day trip to BAH and was asked when checking in at BAH (I did not do the on-line thing - totally forgot for once) and was asked if I would go in Y class instead of my firm J seat? I said I would (it's an hours flight!). I was offered a voucher for a free DXB-BAH-DXB J ticket and given my Y class boarding pass.
I was called from the lounge and presented with a J boarding pass. They also let me keep the voucher for offering!
(Maybe due to gold status)
I think any airline, should ask its FFT's if they are prepared to do down grading, it saves the embaressment at the check in desk of asking "everyone", or those NOT prepared to do it!
They have me down as a vodka drinking Aisle sitter, so maybe they could ask if I would be a downgrader too!