I think the on-line booking at ROH and the Paris Opéra has still a long way to go !
When I booked on-line in Italy I received a confirmation within 10 minutes. They even offered the possibility to make a free 24-hours reservation before booking.
A few weeks ago I met a Belgian dancer who danses in Götheborg-Sweden. Afterwards I discovered their website : you need to see this ! The minimalist design is beautiful (www.opera.se)
You can make a 'virtual' tour behind the scenes and through the magnificient building.
The on-line booking provides views from every seat !
Concerning the 'seats with restricted view' you can even "try" the difference between 'leaning forward' and 'sitting back'.
(I think Eugene or someone else mentioned a similar website sometime ago)
And for a 'special occasion' you make a table-reservation in the opera-restaurant. Even the menu & wine-list is on-line !
For those who have already lost control over their fingers, this can become a very expensive 'look to the future'!