It sure seemed like with that ending that Shonda DID want Georgie and Izzie together but was forced by the fan reaction/ABC suits to drop it as unceremoniously as she did and completely ignore it. Having it end with a possibly dead Izzie see a possibly dead George says to me that if they DO die (which, of course, is still possibly not going to happen), they're together forever.
So, the Georgie/Izzie lover in me to that says ... awwwww!!! Together for eternity.