Originally Posted by
Ldnn1
It's a good question. It would also align with AA's Main Cabin Extra (with AA now having Premium Economy as well).
I'm sure BA have looked at it but not yet had a convincing business case and/or resources to introduce it. That may or may not change in future.
I guess its a market they don't want to play in, if I have to fly to the US and it ends up being economy I'll try and go AA as my gold status let's me select the main cabin extra seats for free making it more comfortable by some margin than BA economy.