[ubernostrum]

Seatguru can tell you "the 777-200 config version 1 looks like this", but can't tell you "the flight you're booking will have that aircraft in that configuration". They can tell you that historically it often is that aircraft/configuration, but that's not actually enough to project forward into the future with full reliability.

And that's the hard part. It's even worse for the more common case of domestic flights, because those get swapped way more often than long-haul international.

[jpalomaki]

I have been hoping that EU would force airlines to disclose things like leg space.

The market is not working from consumer point of view, becsuse you don't really know what you are getting when booking the ticket.