Well I'm personally still going to buy it. Those deleted scenes are something I've wanted to see for years, and though I wish I could just pirate them, I can't bring myself to do that. I want the CGI Yoda. I want the documentaries. There's enough there for me to justify the purchase. If it was just the movies with these changes, there's no way, I'd just stick with the DVD's and fanedits/preservations. But I think George has made it worth my while. At the end of the day, it's still Star Wars on Blu-Ray with tons of features we've never seen before.
And to clarify, I'm not particularly excited about these OT changes, I'm merely doing the old "Hey, it could be worse!" and it has been. These pale in comparison to the 1997 changes.