Like yourself, I use my BA miles to upgrade from WT+ to J. As this is such a good deal I'm happy to take what's available 24 hours before ETD.
If I ever feel unhappy with my seat allocation I have a little wander aft & admire the view. I then return to my flat bed with a small smirk of relief on my face.
It's very boring on the CC forum. Maybe it needs livening up a bit!