If a seat would be the same as first class today then I'd fly this. A 3 hour flight means I can take off at 7AM local and land in London at 3PM local and be whe

If a seat would be the same as first class today then I'd fly this. A 3 hour flight means I can take off at 7AM local and land in London at 3PM local and be where I'd like to be by 5:00PM local in time for a few drinks and a dinner. This would make jet-lag much easier to deal with. But if it's significantly more, then no.