The new production of CARMEN was very dramatically secure and peopled with principal singers who not only sang beautifully but acted well and looked gorgeous. The days of "park and bark" that marked some of the great voices of past decades are largely over. If you're speaking of the same production that I saw (Elina Garanca, Roberto Alagna, Barbara Frittoli, Mariusz Kweicien), then I have to greatly disagree with you. Garanca is no actress, and Kweicien graduated from the old-school baritone school of acting. Alagna and, occassionally, Frittoli fared better, but I wouldn't call either actors.
There are some opera singers (Racette, Damrau, Jonas Kaufmann, Joyce DiDonato) who I think have great stage presence--but most do not. Park and bark is way more alive than most people want to admit. I see opera on a regular basis, and that is my empirical opinion.
"You travel alone because other people are only there to remind you how much that hook hurts that we all bit down on. Wait for that one day we can bite free and get back out there in space where we belong, sail back over water, over skies, into space, the hook finally out of our mouths and we wander back out there in space spawning to other planets never to return hurrah to earth and we'll look back and can't even see these lives here anymore. Only the taste of blood to remind us we ever existed. The earth is small. We're gone. We're dead. We're safe."
-John Guare, Landscape of the Body