Although you are looking for BA feedback, I’d just like to say that I regard Etihad J as the best of the ‘ME3’ business classes by some distance – it is like a F- product.
I just did a DXB-DOH-MAN overnight with QR in J and whilst it is a very good product (772 and then 788, which has a great seat), it does not come near EY as an overall experience, also I did EK DXB-MAN last week in J on the A380 and that was (IMO) slightly better than QR, but again not in the same league as EY.
Just my tuppence.
On a personal mote, you might be interested to know that my son has just graduated with a first and starts his banking job next month. I know he is grateful for your advice 🙂