Interesting thread, some good posts.
I have had the 7D since it came out, and love the camera. It was a real step up from my 350D in every way. The specs (eg FPS, AF pts) build quality, functionality (eg live view, video), body size and (believe it or not!) APS-C sensor are all positive attributes to me.
Not that the 7D is perfect, eg it has more noise than I would like, but with careful exposure and post-processing, good results can be achieved even at ISO3200 to ISO4000. I have taken so many photos with it, that the camera feels totally natural to me. When I go back to my 350D - or when I go 'even further back' to my Fuji digital P&S, I think "wow, how did I ever use those tiny, limited view-finders?" [and use the tiny 1.5" rear display??] But I did, and still have thousands of great photos, real keepers with each!
I have used digital cameras with poor EVFs, but also those with much better ones. I remember when the DSLR world was caught be surprise with Live-View and Video. Many people were saying "It will never happen" or "The quality will be rubbish". While there are still improvements to be made, I think most of us will agree - Live-View and DSLR Video are maturing along quite well, quality is very good and each present many positive benefits to users.
So, with regard to an EVF... I'd like to see a good one incorporated into a mirrorless Canon DSLR in the near future. Maybe that will be the 7DmkII (before the same progresses up to a FF). I'm sure the scientistics, electronic engineers, etc at Canon (and other DSLR companies) have been researching and developing these for ages. Or it might be that we're not quite ready, and the 7DmkII will come out, still having an OVF.
Either way, technology is advancing in this segment in tangible steps, and should I upgrade my current 7D in the future (there is no reason to at this point in time) - I'm sure models succeeding the 7D eg 7DmkII, 7DmkIII, etc - in the right pair of hands - will be capable of taking stunning photos.
I, for one, am very much looking forward to the future.