Charging for hold baggage has been nothing more than a marketing gimmick from the start. '...in the interests of transparency...blah blah yawn'.
I flew with FlyBe just recently from Man on a route that I normally use BA.
I only had hand baggage for a day trip but was dismayed to find a queue to get into the check in area. Reason: there was a lady with a clip board asking people their name and checking against a list on the clip board how much 'free' baggage and how much 'chargeable' baggage each person had. Then....you could join the queue for check-in where the operatives were dithering about how to deal with the charge/no charge situation.
How can this be 'low cost' ? they had to employ someone to do the queue check or at least divert her from something more productive and slowed the whole process down. It was more inefficient than Sheremetyevo Domestic.
And what's it all for? £1 per passenger or something? If you can't afford this, you can't afford to travel.
Overall the experience was so

I've gone back to BA, which despite its other faults has got an uber efficient check in process.