Hmmm... it's sort of what I was expecting, though there had been an amount of hype that implied Brompton were going to come up with something out of the ordinary. What's out of the ordinary is the price tag, even by Brompton's standards.
It's a tricky one, there's really nowhere other than the front hub where a motor can be installed, but to put extra weight on the front makes the folded package more unbalanced, and it's already not particularly balanced.
I wonder if a Shareroller might be a better option.