I’ve no problem with the BA 787 (and A380 top deck) being 7 across in business, but it needs to be a better seat, all forward facing and direct aisle access, just like the new EADS seat. The current rear-facing middle seat does not look favourable, and I for one will avoid it.
Premium economy is in the correct configuration of 2-3-2 on both planes, but what annoys me is the 3-3-3 economy configuration on the 787. On the A380 top deck, which is roughly the same width, BA have gone for a standard economy layout of 2-4-2.
For the record I’ve not flown on either plane, but I can clearly see the different layouts from the seat plans.